Finding the Fourth Proportional to 102,381.57, 141,286.01 and 57,061.53

Step by Step Solution

1. Step 1: Write the proportion equation
   102,381.57 : 141,286.01 = 57,061.53 : x
2. Step 2: Convert to fraction form
   102,381.57/141,286.01 = 57,061.53/x
3. Step 3: Cross multiply
   102,381.57x = 141,286.01 × 57,061.53
4. Step 4: Simplify right side
   102,381.57x = 8,061,995,612.89
5. Step 5: Solve for x
   x = 8,061,995,612.89/102,381.57
6. Step 6: Final answer
   x = 78,744.60