How to calculate interest on Balance tax payable

Hi,

How to calculate interest on Balance tax to be paid.

Here are details that will be of help.

Total tax liability          -  96464.28

tax paid till date           - 78367

Tax paid by 15th Sep - 29247

Tax paid by 15th Dec - 50299

Tax paid by 15th Mar - 71350

Kindly illustrate the computation details for clarification.

Thanks & regards,

Prashant