Finding the Fourth Proportional to 142,425.72, 213,356.79 and 115,801.43

Step by Step Solution

1. Step 1: Write the proportion equation
   142,425.72 : 213,356.79 = 115,801.43 : x
2. Step 2: Convert to fraction form
   142,425.72/213,356.79 = 115,801.43/x
3. Step 3: Cross multiply
   142,425.72x = 213,356.79 × 115,801.43
4. Step 4: Simplify right side
   142,425.72x = 24,707,020,315.43
5. Step 5: Solve for x
   x = 24,707,020,315.43/142,425.72
6. Step 6: Final answer
   x = 173,473.02