PowerPC CPUs are still produced, mainly for embedded applications, e.g. the Qorivva MPC55xx MCUs.
As far as I'm aware, the only currently-produced (for some value of "produced") desktop computers using PowerPC processors are Amiga replacements: ACube Systems' AmigaOne 500 and A-EON Technology's AmigaOne X5000. Nowadays on the desktop it's pretty much all Intel/AMD, with a sprinkling of ARM.
The Power architecture lives on in IBM's POWER CPUs, the current iteration of which is the POWER10; but they're only available in (expensive, but very, very fast) IBM servers. The previous generation POWER9 processors are available in IBM servers, with the OpenPOWER9 variant being available in the Talos II workstation as well as some other third-party servers.
You should be able to find lots of PowerPC-based Apple computers second-hand, capable of running your discs (assuming the operating system is compatible).
If your disc images are for Macintosh-style computers, you could try running them with QEMU's PowerPC emulator. For more direct Mac OS on PowerPC emulation, you could also try PearPC or SheepShaver.