Finding the Fourth Proportional to 102,081.96, 140,877.81 and 56,764.53

Step by Step Solution

1. Step 1: Write the proportion equation
   102,081.96 : 140,877.81 = 56,764.53 : x
2. Step 2: Convert to fraction form
   102,081.96/140,877.81 = 56,764.53/x
3. Step 3: Cross multiply
   102,081.96x = 140,877.81 × 56,764.53
4. Step 4: Simplify right side
   102,081.96x = 7,996,862,672.08
5. Step 5: Solve for x
   x = 7,996,862,672.08/102,081.96
6. Step 6: Final answer
   x = 78,337.67