Finding the Fourth Proportional to 102,196.77, 141,038.18 and 56,874.62

Step by Step Solution

1. Step 1: Write the proportion equation
   102,196.77 : 141,038.18 = 56,874.62 : x
2. Step 2: Convert to fraction form
   102,196.77/141,038.18 = 56,874.62/x
3. Step 3: Cross multiply
   102,196.77x = 141,038.18 × 56,874.62
4. Step 4: Simplify right side
   102,196.77x = 8,021,493,174.49
5. Step 5: Solve for x
   x = 8,021,493,174.49/102,196.77
6. Step 6: Final answer
   x = 78,490.67