5. KING SOLOMON OF ISRAEL – $2.2 TRILLION

According to the Bible, King Solomon ruled from 970 BC to 931 BC, and during this time he is said to have received 25 tons of gold for each of the 39 years of his reign, which would be worth billions of dollars in 2016. Along with impossible riches amassed from taxation and trade, the biblical ruler’s personal fortune could have surpassed $2 trillion in today’s money.