Finding the Fourth Proportional to 92,767.46, 139,037.18 and 42,778.17

Step by Step Solution

1. Step 1: Write the proportion equation
   92,767.46 : 139,037.18 = 42,778.17 : x
2. Step 2: Convert to fraction form
   92,767.46/139,037.18 = 42,778.17/x
3. Step 3: Cross multiply
   92,767.46x = 139,037.18 × 42,778.17
4. Step 4: Simplify right side
   92,767.46x = 5,947,755,908.47
5. Step 5: Solve for x
   x = 5,947,755,908.47/92,767.46
6. Step 6: Final answer
   x = 64,114.68