Retirement tax questions

"Forth Roth IRA" - do you mean this is your fourth Roth IRA and you already have 3 others?

If so, then the 5 year rule is satisfied if you have owned any Roth IRA for 5 years, unless it is a Roth conversion, in which case, each Roth conversion has it's own 5 year clock.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**