Sell everything you own everything even the doors and windows in houses and go to the largest casino in your town and gamble it in one throw of the dice and if your lucky you should start to be doing it continuously in a row so you will be doubling your funds every time you roll you could eventually reach the big 1 billion dollars if you are so lucky.
Find a genie and make it grant all your wishes one of the best ways to become wealthy is to wish for unlimited funds with this you can buy the world or if you just want to just control all the business in the world just buy them all and governments will be to scared to tax you or you have the power to fire every one that's the way I would go
Win lotto at the moment there is 22 million dollars over in Sydney Australia win that and your rich under an hour
Rob a bank that is the hardest way and has more consequences if you get caught you will be in jail for a minium of 5 years and also if you killed any one that is life. But if you are successful you can reap the awards.
Last but not least you can just have a business that makes you like 1 million dollars every 30 minutes well there's your answer
can and will not be held responsible for people who try these methods try them at your own risk