At a fabrication plant, a hot metal forging has a mass of 68.1 kg and a specific heat capacity of 427 J/(kg C°). To harden it, the forging is quenched by immersion in 700 kg of oil that has a temperature of 37.6 °C and a specific heat capacity of 2780 J/(kg C°). The final temperature of the oil and forging at thermal equilibrium is 45.8 °C. Assuming that heat flows only between the forging and the oil, determine the initial temperature in degrees Celsius of the forging.