d$)$ Lewis calculates a Present Value of Owning a piece of Equipment as $$591,741\mathrm{.}00.$

The lease information is provided below:

Lease: Lewis could lease the machine for $4$ years for a lease payment of $$260,000$ per annum, payable at the beginning of each year.

The marginal tax rate is $40\%$ and cost of borrowing is $10\%.$

Calculate the NAL.