Finding the Fourth Proportional to 101,629.50, 140,248.71 and 56,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,629.50 : 140,248.71 = 56,917.50 : x
2. Step 2: Convert to fraction form
   101,629.50/140,248.71 = 56,917.50/x
3. Step 3: Cross multiply
   101,629.50x = 140,248.71 × 56,917.50
4. Step 4: Simplify right side
   101,629.50x = 7,982,605,951.43
5. Step 5: Solve for x
   x = 7,982,605,951.43/101,629.50
6. Step 6: Final answer
   x = 78,546.15