Finding the Fourth Proportional to 101,520.59, 140,096.72 and 56,197.62

Step by Step Solution

1. Step 1: Write the proportion equation
   101,520.59 : 140,096.72 = 56,197.62 : x
2. Step 2: Convert to fraction form
   101,520.59/140,096.72 = 56,197.62/x
3. Step 3: Cross multiply
   101,520.59x = 140,096.72 × 56,197.62
4. Step 4: Simplify right side
   101,520.59x = 7,873,101,952.82
5. Step 5: Solve for x
   x = 7,873,101,952.82/101,520.59
6. Step 6: Final answer
   x = 77,551.78