Help with modifying SUM

Table Structure

DCR
------
CustomerNumber
CC
PDC
EnteredDate
FeeGoal
FeeSchedule
PostedAmount

I need a query which will do:

SUM(PostedAmount + SUM(All PDC where EnteredDate in current month) + SUM(All CC where entered date in current month) + SUM(All PDC where EnteredDate not in current month) + SUM(All CC where entered date in current month)) * FeeSchedule
for each company

call that In-House for the above Sum

Then I need to do a grand total on all In-House as one sum. I did something similar like this for another calculation but it didn't include the additions of PDC and CC. That query looked like this:

Select Total = SUM(gt)

FROM
(Select Distinct CustomerName, CustomerNumber, FeeGoal AS FG, FeeSchedule,
(cast(FeeGoal as numeric(30,10)) / FeeSchedule) * 100 AS gt
from DCR WHERE branch='00002'
group by CustomerName,
CustomerNumber,
FeeGoal,
FeeSchedule
) as dTable

so really what I want to change is (cast(FeeGoal as numeric(30,10)) / FeeSchedule) * 100 to add the PDC and CC sums and then * FeeSchedule instead of / like I have here