Yes we have different ways on how to double our money in a safest ways but for me the best way to double my $100,000 safely is to invest. Or you might get or have a business that you are the one to manage in a smarter way and think another way if what you can do. I know we have the knowledge on how to grow and have much money in double, we the capabilities to do that because we, people is a good thinker in terms of money matters.