Finding the Fourth Proportional to 92,847.38, 139,248.62 and 42,879.42

Step by Step Solution

1. Step 1: Write the proportion equation
   92,847.38 : 139,248.62 = 42,879.42 : x
2. Step 2: Convert to fraction form
   92,847.38/139,248.62 = 42,879.42/x
3. Step 3: Cross multiply
   92,847.38x = 139,248.62 × 42,879.42
4. Step 4: Simplify right side
   92,847.38x = 5,970,900,061.40
5. Step 5: Solve for x
   x = 5,970,900,061.40/92,847.38
6. Step 6: Final answer
   x = 64,308.76