First I want to project the lines from above (the top, and the selected form) and project them to the side (where this form is missin, 90 deg. angle thats not selected) and make a cut that follows this form, wheres the small radius it must be in radius and the long curve needs to be followed ~40Deg. cut.
Given the lack of response to your post, it would seem no one is able to understand your objective.
Many here are willing to invest their time and effort to help you.
You need to invest your time and effort in providing a clear description what you want to accomplish.
I’m not sure if this is what you are after or not but perhaps it can help. You may be able to do this with the follow me tool. In the gif below I used the subtraction solid tool but the same thing can be done with intersection and eraser.
Let us know if this is on the right track.