How to increase chances of having a boy?

Question

Hi everyone, I have three girls and would like to have a boy, as it would be my last child. 
Can anyone suggest any certain tricks they have tried that had worked for them.

Answer

That’s not how it works. You get what you get.

Answer

No matter what you do you still have a 50/50 chance of either gender. Unless you do ivf and pick the gender  of the embryo.

Answer

You don’t get to choose your gender.

Answer

By doing IVF lol literally the only option.

Answer

Don’t know why everyone is getting offended by you asking this. Although there are no guarantees and it’s always a 50/50 chance, you can help increase your chances of it being a male sperm to fertilise the egg by having lots of sex on your peak ovulation/when you’ve ovulated. 
The theory is the male sperm swim faster but die sooner, whereas female sperm swim slower and can survive up to 5 days in the right conditions. 
This method has been true for me. However, could just be purely good luck! 
It’s worth a try, but remember there’s no guarantees outside of IVF :)