The correct balance in the cash account is $86,456, after accounting for the unrecorded deposit, bank collection, NSF check, and record discrepancies.
The correct balance in the cash account after reconciling the mentioned items would be $86,456.
Starting with the original balance of $85,000, we need to add the deposit not recorded by the bank, which is $4,600, giving us $89,600. The collection by the bank of $1,880 is also added since it increases the cash balance. The customer's NSF check for $640 and the check recording error of $180 ($1,080 recorded instead of $900) needs to be subtracted. Finally, we need to correct the check recording error by adding the difference of $36 ($194 recorded instead of $158), resulting in the correct cash balance of $86,456.
By following the standard procedures for bank and book adjustments during a cash reconciliation, we can determine the accurate cash balance for the account.