Finding the Fourth Proportional to 142,165.31, 213,188.67 and 57,868.43

Step by Step Solution

1. Step 1: Write the proportion equation
   142,165.31 : 213,188.67 = 57,868.43 : x
2. Step 2: Convert to fraction form
   142,165.31/213,188.67 = 57,868.43/x
3. Step 3: Cross multiply
   142,165.31x = 213,188.67 × 57,868.43
4. Step 4: Simplify right side
   142,165.31x = 12,336,892,560.74
5. Step 5: Solve for x
   x = 12,336,892,560.74/142,165.31
6. Step 6: Final answer
   x = 86,778.50