Finding the Fourth Proportional to 102,073.52, 140,867.79 and 56,751.86

Step by Step Solution

1. Step 1: Write the proportion equation
   102,073.52 : 140,867.79 = 56,751.86 : x
2. Step 2: Convert to fraction form
   102,073.52/140,867.79 = 56,751.86/x
3. Step 3: Cross multiply
   102,073.52x = 140,867.79 × 56,751.86
4. Step 4: Simplify right side
   102,073.52x = 7,994,509,096.59
5. Step 5: Solve for x
   x = 7,994,509,096.59/102,073.52
6. Step 6: Final answer
   x = 78,321.09