Finding the Fourth Proportional to 57,540.88, 86,315.42 and 20,096.71

Step by Step Solution

1. Step 1: Write the proportion equation
   57,540.88 : 86,315.42 = 20,096.71 : x
2. Step 2: Convert to fraction form
   57,540.88/86,315.42 = 20,096.71/x
3. Step 3: Cross multiply
   57,540.88x = 86,315.42 × 20,096.71
4. Step 4: Simplify right side
   57,540.88x = 1,734,655,798.72
5. Step 5: Solve for x
   x = 1,734,655,798.72/57,540.88
6. Step 6: Final answer
   x = 30,146.49