Payroll table creation challenge - Fill rows with various text requirements and repetition

In the "Payroll export" worksheet, I need to take the data in columns C through AL, and convert it to what I've built columns AN through AR.

I have used an Array formula to paste the property, names, GL account, which are all the same, then another paste for the individual cost per property. This needs to be repeated 12 times. The reason for this is so that I can build the pivot tables.

My question / challenges are:

Is there a single formula that would allow me to specify whatever is in cell X3, repeat in cells AN6:AN100, and Y3 repeat in cells AN101:AN200, and Z3 repeat in cells AN201:A300?

Is there a single formula to repeat values in cell C3:C100, 12 times in column AO?

Payroll table challenge

https://docs.google.com/spreadsheets/d/1PaMPM-2hx-87lz4E3_ynDZ5l0WDbNfLOPCo8uYuJyY8/edit?usp=sharing

Thank you!