Finding the Fourth Proportional to 402,343.71, 555,003.33 and 251,178.27

Step by Step Solution

1. Step 1: Write the proportion equation
   402,343.71 : 555,003.33 = 251,178.27 : x
2. Step 2: Convert to fraction form
   402,343.71/555,003.33 = 251,178.27/x
3. Step 3: Cross multiply
   402,343.71x = 555,003.33 × 251,178.27
4. Step 4: Simplify right side
   402,343.71x = 139,404,773,250.46
5. Step 5: Solve for x
   x = 139,404,773,250.46/402,343.71
6. Step 6: Final answer
   x = 346,481.80