Finding the Fourth Proportional to 92,948.72, 139,344.72 and 40,318.58

Step by Step Solution

1. Step 1: Write the proportion equation
   92,948.72 : 139,344.72 = 40,318.58 : x
2. Step 2: Convert to fraction form
   92,948.72/139,344.72 = 40,318.58/x
3. Step 3: Cross multiply
   92,948.72x = 139,344.72 × 40,318.58
4. Step 4: Simplify right side
   92,948.72x = 5,618,181,240.90
5. Step 5: Solve for x
   x = 5,618,181,240.90/92,948.72
6. Step 6: Final answer
   x = 60,443.88