Is there a way to autofill a custom data field in Folder A with calculated data in a custom data field from Folder B?

In other words, can I get the custom field value from one folder and use it in another folder? If not, what is an appropriate implementation of this behavior?

Here is an example: I have multiple tasks with a calculated custom field "Invoice Amount",  the number of hours performed for a task multiplied by the rate of pay, residing in Folder B. In Folder A, I would like to use the "Invoice Amount" calculation as a custom field. Currently, I am copying and pasting this value into a task in Folder A. There is no inheritance involved. Folder A and Folder B exist on the same level within the root folder. I would like to have this custom field data populate itself in real time, whether through Wrike Integrate or some other means. Any suggestions are greatly appreciated?🙂