Finding the Fourth Proportional to 144,878.52, 217,200.78 and 56,086.68

Step by Step Solution

1. Step 1: Write the proportion equation
   144,878.52 : 217,200.78 = 56,086.68 : x
2. Step 2: Convert to fraction form
   144,878.52/217,200.78 = 56,086.68/x
3. Step 3: Cross multiply
   144,878.52x = 217,200.78 × 56,086.68
4. Step 4: Simplify right side
   144,878.52x = 12,182,070,643.61
5. Step 5: Solve for x
   x = 12,182,070,643.61/144,878.52
6. Step 6: Final answer
   x = 84,084.73