Who was at the top of Forbes 2015 list of the richest people in the world?
As of the Forbes 2015 list of the richest people in the world, Bill Gates was at the top of the list. He is a co-founder of Microsoft and was a consistently prominent figure on the Forbes list for many years. However, please note that this information is accurate as of 2015, and rankings may have changed since then. For the most up-to-date information, I recommend checking the latest Forbes list or a reliable news source.