Formatting in days, hours, minutes and seconds

Hello,

I have a field (ActiveDuration) that outputs in minutes and I need a way to convert this to D:HH:MM:SS. I have tried various custom codes and functions I've found on here but none of them seem to work properly. The function I am using is =Avg(Fields!ActiveDuration.Value)/8640). When I output the report to Excel I can convert this column to the custom format D:HH:MM:SS but there doesn't seem to be a way to do this in report builder. Any one know how I can achieve this?

Example - 581.8818182 / 8640 = 0.067347433 I want it to display as 0:01:36:59

Thanks

Suzi