The MacbookPro4,1 will run Mac Rhino 5, but because of limited RAM and GPU memory, you won’t be able to create or work with large models.
This Mac is ten years old, and you should expect the hardware to die at any time. Apple has declared this Mac as obsolete, so you cannot get any repair parts for it. https://support.apple.com/en-us/HT201624
This Mac will not run any version of macOS past 10.11.x. Apple dropped OS support for this Mac with macOS 10.12.
Mac Rhino V6 will require macOS 10.13 or later, so this Mac will not run Mac V6 Rhino.