Finding the Fourth Proportional to 92,687, 137,838.12 and 89,734.52

Step by Step Solution

1. Step 1: Write the proportion equation
   92,687 : 137,838.12 = 89,734.52 : x
2. Step 2: Convert to fraction form
   92,687/137,838.12 = 89,734.52/x
3. Step 3: Cross multiply
   92,687x = 137,838.12 × 89,734.52
4. Step 4: Simplify right side
   92,687x = 12,368,837,535.90
5. Step 5: Solve for x
   x = 12,368,837,535.90/92,687
6. Step 6: Final answer
   x = 133,447.38