How Wealthy was King Solomon?

You may know that Solomon was rich, but how much would he lived today? How does he compare to people like Bill Gates, Al gore and the medieval African Mansa Musa?

According to 2 Chronicles 9:13 Solomon, as a King gained "over twenty-five tons of gold" every year. 

1 ton = 907.185 kilograms 
25 tons = 22679.625 kilograms 

1 kilogram = $38648.41 (us)
22679.625 kilograms = $876531445.646

So, in terms of today's (June 19, 2015) currency Solomon had $876531445.646 as a monarch
 to use for building projects. And that's only for one year. The record doesn't even include trade 
revenue taxes for merchants or gifts. Were told Solomon reigned for forty years but it isn't clear 
when Solomon started making more than twenty-five tons of gold. I'm going to assume that 
Solomon only began making so much money after twenty years of his reign; I make this 
assumption because some major sources of his revenue appear to come after The Temple 
and his palace was built. For example his marriage to Pharaoh's daughter and his ships setting 
out for Ophir. 

$876531445.646*20 is...
$17,530628912.9 US (which would put him 51st on Forbes current list.)
$21,542951605.34 (Canadian) 
67,107247478.58 (Israeli shekel)
15,464426915.72 (Euro)
11,037701192.53 (British pounds)         


It's worth noting however that Solomon as King of a Kingdom that stretched from the wadi to Egypt (in the north-central Sinai area) to the river Euphrates he was obligated to spend money on repairing and fortifying cities, making sure the military was up to shape and making sure every Israelite in the Kingdom has some level of quality of life. Imagine if your country's income went to one individual who choose to give to his people at will. 

Sadly for Israel the United Kingdom would be divided and also raided by Pharaoh 

Sheshonq within one hundred years after Solomon's death. Sheshonq left this as an undeniable proof: