Finding the Fourth Proportional to 57,870.34, 86,761.83 and 20,414.02

Step by Step Solution

1. Step 1: Write the proportion equation
   57,870.34 : 86,761.83 = 20,414.02 : x
2. Step 2: Convert to fraction form
   57,870.34/86,761.83 = 20,414.02/x
3. Step 3: Cross multiply
   57,870.34x = 86,761.83 × 20,414.02
4. Step 4: Simplify right side
   57,870.34x = 1,771,157,732.86
5. Step 5: Solve for x
   x = 1,771,157,732.86/57,870.34
6. Step 6: Final answer
   x = 30,605.62