78 kg is equivalent to 171.96 pounds. To convert kilograms to pounds, you can use the conversion factor of 2.2046226218488 pounds per kilogram. Alternatively, you can multiply the number of kilograms by 2.204622622 to get the equivalent weight in pounds. Therefore, 78 kg multiplied by 2.204622622 equals 171.960564516 pounds, which can be rounded to 171.96 pounds.