Finding the Fourth Proportional to 83,887.78, 125,909.43 and 42,363.94

Step by Step Solution

1. Step 1: Write the proportion equation
   83,887.78 : 125,909.43 = 42,363.94 : x
2. Step 2: Convert to fraction form
   83,887.78/125,909.43 = 42,363.94/x
3. Step 3: Cross multiply
   83,887.78x = 125,909.43 × 42,363.94
4. Step 4: Simplify right side
   83,887.78x = 5,334,019,537.95
5. Step 5: Solve for x
   x = 5,334,019,537.95/83,887.78
6. Step 6: Final answer
   x = 63,585.18