Finding the Fourth Proportional to 101,385.72, 139,910.84 and 56,062.71

Step by Step Solution

1. Step 1: Write the proportion equation
   101,385.72 : 139,910.84 = 56,062.71 : x
2. Step 2: Convert to fraction form
   101,385.72/139,910.84 = 56,062.71/x
3. Step 3: Cross multiply
   101,385.72x = 139,910.84 × 56,062.71
4. Step 4: Simplify right side
   101,385.72x = 7,843,780,568.46
5. Step 5: Solve for x
   x = 7,843,780,568.46/101,385.72
6. Step 6: Final answer
   x = 77,365.73