Finding the Fourth Proportional to 83,885.62, 125,789.55 and 31,280.98

Step by Step Solution

1. Step 1: Write the proportion equation
   83,885.62 : 125,789.55 = 31,280.98 : x
2. Step 2: Convert to fraction form
   83,885.62/125,789.55 = 31,280.98/x
3. Step 3: Cross multiply
   83,885.62x = 125,789.55 × 31,280.98
4. Step 4: Simplify right side
   83,885.62x = 3,934,820,397.76
5. Step 5: Solve for x
   x = 3,934,820,397.76/83,885.62
6. Step 6: Final answer
   x = 46,906.97