Step 1: Compute the present value of the bond: Since the current interest rate is above the coupon rate the bond will be issued at a discount.
FV = $5,000,000; N = 20; PMT = (0.04)(5 million) = $200,000; I/Y = 4.5; CPT → PV = -$4,674,802
Step 2: Compute the interest expense at the end of the first period.
= (0.045)(4,674,802) = $210,366
Step 3: Compute the interest expense at the end of the second period.
= (new balance sheet liability)(current interest rate)
= $4,674,802 + $10,366 = $4,685,168 new balance sheet liability
(0.045)(4,685,168) = $210,833