8. Sultan Hassanal Bolkiah of Brunei – $20 Billion
Photo: worldlifestyle
Hassanal Bolkiah became the Sultan of Brunei in October of 1967 and has had quite the list of achievements since then. With an estimated net worth over $20 billion, he’s also been extremely successful. In January of 1984, he was also named the Prime Minister of Brunei and has acquired numerous honorary doctorates from Universities all over the world including the well-known Oxford University in England. By the young age of 15 he was already deemed the Crown Prince and just six years later he became Sultan.