Hi Robert,
As per my knowledge if Qty=16 Price = 11.79 & discount 4.3, So Calculation are below
16*11.79 = 188.64 and discount = 4.3
So,
188.64-4.3 % = 180.523 = 180.53
And for Price after discuount SAP are calculated by internal with cinsidering the discount value
I hope this will help you
Rgds,
Kamlesh Naware