A \(23 / 230-\mathrm{kV}\) step-up transformer feeds a three-phase transmission line, which in turn supplies a 150-MVA, 0.8 lagging power factor load through a step-down \(230 / 23-\mathrm{kV}\) transformer. The impedance of the line and transformers at \(230 \mathrm{kV}\) is \(18+j 60 \Omega\). Determine the tap setting for each transformer to maintain the voltage at the load at \(23 \mathrm{kV}\).