It's easy. All you need is to setup port forwarding on your router to forward ports 80
and 443
(in your case, as you want webpage access). Don't worry about doing anything else (but you will still have to properly setup httpd server) as you will have your static IP as public IP address but not your local, which is 192.168.1.50
.
To make sure that you're having expected public IP, just type in Google:
IP
as a result you should have:
Your public IP address is 1.2.3.4