Finding the Fourth Proportional to 60,570.78, 83,540.34 and 39,356.88

Step by Step Solution

1. Step 1: Write the proportion equation
   60,570.78 : 83,540.34 = 39,356.88 : x
2. Step 2: Convert to fraction form
   60,570.78/83,540.34 = 39,356.88/x
3. Step 3: Cross multiply
   60,570.78x = 83,540.34 × 39,356.88
4. Step 4: Simplify right side
   60,570.78x = 3,287,887,136.54
5. Step 5: Solve for x
   x = 3,287,887,136.54/60,570.78
6. Step 6: Final answer
   x = 54,281.74