Finding the Fourth Proportional to 72,708.56, 108,868.33 and 42,698.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,708.56 : 108,868.33 = 42,698.06 : x
2. Step 2: Convert to fraction form
   72,708.56/108,868.33 = 42,698.06/x
3. Step 3: Cross multiply
   72,708.56x = 108,868.33 × 42,698.06
4. Step 4: Simplify right side
   72,708.56x = 4,648,466,486.44
5. Step 5: Solve for x
   x = 4,648,466,486.44/72,708.56
6. Step 6: Final answer
   x = 63,932.86