hehe, you mean "following", not "preceeding" (couldn't resist since you're talking about english use

).
Anyway, comma usage is not as cut and dried as it used to be. I don't know what Strunk's Elements of Style would say, but I think:
The appraisal was schedualed for today but Sarah felt sick, so we reschedualed the appointment for Tuesday. Also, we continued forward and adjusted the loan amount to $ 182,700.