18. Prince Sultan bin Mohammed bin Saud Al Kabeer – $6 Billion
Photo: worldlifestyle
Prince Sultan bin Mohammed bin Saud Al Kabeer is a member of the Saudi Royal family, which happens to be one of the wealthiest families on Earth. However, Al Kabeer also made a fortune when he established a dairy company called Almarai in 1977. It went public in 2005 and made him a substantial amount of money. Al Kabeer also has 100 different studs that are used for horse racing, according to the Breeders Cup racing association.