Aliko Dangote, president of Dangote group, is now richer than Donald Trump, Republican front runner; Roman Abramovich, owner of Chealsea football club and Oprah Winfrey, the richest black woman, put together. Dangote, who came in at the 51st position of the 2016 ranking by Forbes Magazine, is also richer than the combination of all other Nigerians who made the list. Despite losing $300 million