Finding the Fourth Proportional to 72,710.56, 108,871.33 and 42,700.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,710.56 : 108,871.33 = 42,700.06 : x
2. Step 2: Convert to fraction form
   72,710.56/108,871.33 = 42,700.06/x
3. Step 3: Cross multiply
   72,710.56x = 108,871.33 × 42,700.06
4. Step 4: Simplify right side
   72,710.56x = 4,648,812,323.28
5. Step 5: Solve for x
   x = 4,648,812,323.28/72,710.56
6. Step 6: Final answer
   x = 63,935.86