Finding the Fourth Proportional to 127,560.78, 191,275.55 and 57,401.82

Step by Step Solution

1. Step 1: Write the proportion equation
   127,560.78 : 191,275.55 = 57,401.82 : x
2. Step 2: Convert to fraction form
   127,560.78/191,275.55 = 57,401.82/x
3. Step 3: Cross multiply
   127,560.78x = 191,275.55 × 57,401.82
4. Step 4: Simplify right side
   127,560.78x = 10,979,564,404.49
5. Step 5: Solve for x
   x = 10,979,564,404.49/127,560.78
6. Step 6: Final answer
   x = 86,073.20