Finding the Fourth Proportional to 92,684.31, 139,067.91 and 42,737.61

Step by Step Solution

1. Step 1: Write the proportion equation
   92,684.31 : 139,067.91 = 42,737.61 : x
2. Step 2: Convert to fraction form
   92,684.31/139,067.91 = 42,737.61/x
3. Step 3: Cross multiply
   92,684.31x = 139,067.91 × 42,737.61
4. Step 4: Simplify right side
   92,684.31x = 5,943,430,101.10
5. Step 5: Solve for x
   x = 5,943,430,101.10/92,684.31
6. Step 6: Final answer
   x = 64,125.53