Finding the Fourth Proportional to 102,156.89, 141,045.96 and 63,931.92

Step by Step Solution

1. Step 1: Write the proportion equation
   102,156.89 : 141,045.96 = 63,931.92 : x
2. Step 2: Convert to fraction form
   102,156.89/141,045.96 = 63,931.92/x
3. Step 3: Cross multiply
   102,156.89x = 141,045.96 × 63,931.92
4. Step 4: Simplify right side
   102,156.89x = 9,017,339,031.04
5. Step 5: Solve for x
   x = 9,017,339,031.04/102,156.89
6. Step 6: Final answer
   x = 88,269.52