Well, as long as your firewall rules allow incoming connections on port 3306, you should have no problem accessing the database from another PC. I’d start with the first IP in your block, and then move on from there if it doesn’t work. Be careful though - this is a huge security risk.
MySQL listens on TCP port 3306 yes, but it is not bound to an IP. It uses hostnames to allow access (internally). As long as your hostname and/or IP is an allowed host (and your firewall is not blocking 3306), you can connect remotely.