Finding the Fourth Proportional to 681,148.42, 940,013.98 and 379,342.42

Step by Step Solution

1. Step 1: Write the proportion equation
   681,148.42 : 940,013.98 = 379,342.42 : x
2. Step 2: Convert to fraction form
   681,148.42/940,013.98 = 379,342.42/x
3. Step 3: Cross multiply
   681,148.42x = 940,013.98 × 379,342.42
4. Step 4: Simplify right side
   681,148.42x = 356,587,178,007.03
5. Step 5: Solve for x
   x = 356,587,178,007.03/681,148.42
6. Step 6: Final answer
   x = 523,508.78