Hi Rich,

You can achieve this with a workflow using the iteration value on a loop as the index.

First retrieve your field values ( All Values ).

In your For Each Value loop iterate over only one of your retrieved field values.
You can then concatenate the values together.
In the assign token value I added the field that I am iterating over %(ForEachValue_Current Value) and also the other field(s) that I retrieved from my Retrieve Values activity, in my case the field is state.
%(ForEachValue_Current Value) %(RetrieveFieldValues_state_All)


Next click the token dialog  ...

and place the iteration index on all the fields but the Current Value.

So your final value looks similar to: 
%(ForEachValue_Current Value) %(RetrieveFieldValues_state_All#[%(ForEachValue_Iteration)]#)

That gives you the index into each multi value field.