A restaurant owner attaches a sign to the side of his building as shown in the image. A beam is bolted to the building to support the cable, and the cable is anchored to the end of the beam and tensioned such that it bears the full weight of the sign. The beam is exactly horizontal with respect to the earth, the upper portion of cable makes a 31.8^o angle with the beam, and the mass of the sign is 15.6 kg.

Determine the magnitude of the tension in the cable. Give your answer in Newtons.