Merging multiple Fields to one Field
I want to be able to merge options from multiple fields into one field. For example, I have four separate fields (each with a dropdown menu with multiple options) and I want to be able to make the fifth field a combination of the four fields options based on how I select the options for each of the four fields.
For example, if I have "field 1" with the drop down menu options a b c d
"field 2" drop down menu options e f g h
"field 3" drop down menu options i j k l
"field 4" drop down menu options m n o p
When I select "a" under field one, "e" under field two, "i" under field three, and "m" under field four, I want field 5 to automatically say "aeim"
Is there a possbile way to achieve this? Any help is appreciated!!!