Number of decimal places in forms / reports

Hi all,

I'm facing an issue on the number of decimal places in the sales order total and tax amounts simply price related amounts even if I set it to four decimal places the value displayed in the print preview rounds off the actual value to two decimal places and leaves the rest as zeros. For your reference i have attached the below images. as mentioned in the below images the actual value should be 110.2032 but the value displayed is 110.20

Please kindly help me if anyone knows the solution.

Thank you.