Hi Milt,
While not very elegant, I think this should work...
SELECT cust.[State], cust.CustID, cust.CustName, o.OrderID, o.OrderTotal, oc.CustomerTotal, s.StateTotal
FROM Customer cust
LEFT OUTER JOIN (SELECT o.CustID, o.OrderId, SUM(i.Quantity * i.Price) As OrderTotal
FROM...