Finding the Fourth Proportional to 402,442.82, 555,139.82 and 251,277.38

Step by Step Solution

1. Step 1: Write the proportion equation
   402,442.82 : 555,139.82 = 251,277.38 : x
2. Step 2: Convert to fraction form
   402,442.82/555,139.82 = 251,277.38/x
3. Step 3: Cross multiply
   402,442.82x = 555,139.82 × 251,277.38
4. Step 4: Simplify right side
   402,442.82x = 139,494,079,503.27
5. Step 5: Solve for x
   x = 139,494,079,503.27/402,442.82
6. Step 6: Final answer
   x = 346,618.38