Finding the Fourth Proportional to 57,535.14, 86,323.41 and 20,100.72

Step by Step Solution

1. Step 1: Write the proportion equation
   57,535.14 : 86,323.41 = 20,100.72 : x
2. Step 2: Convert to fraction form
   57,535.14/86,323.41 = 20,100.72/x
3. Step 3: Cross multiply
   57,535.14x = 86,323.41 × 20,100.72
4. Step 4: Simplify right side
   57,535.14x = 1,735,162,693.86
5. Step 5: Solve for x
   x = 1,735,162,693.86/57,535.14
6. Step 6: Final answer
   x = 30,158.31