Finding the Fourth Proportional to 142,028.91, 213,174.72 and 71,957.43

Step by Step Solution

1. Step 1: Write the proportion equation
   142,028.91 : 213,174.72 = 71,957.43 : x
2. Step 2: Convert to fraction form
   142,028.91/213,174.72 = 71,957.43/x
3. Step 3: Cross multiply
   142,028.91x = 213,174.72 × 71,957.43
4. Step 4: Simplify right side
   142,028.91x = 15,339,504,992.17
5. Step 5: Solve for x
   x = 15,339,504,992.17/142,028.91
6. Step 6: Final answer
   x = 108,002.69