Finding the Fourth Proportional to 414,308.71, 571,789.89 and 253,258.03

Step by Step Solution

1. Step 1: Write the proportion equation
   414,308.71 : 571,789.89 = 253,258.03 : x
2. Step 2: Convert to fraction form
   414,308.71/571,789.89 = 253,258.03/x
3. Step 3: Cross multiply
   414,308.71x = 571,789.89 × 253,258.03
4. Step 4: Simplify right side
   414,308.71x = 144,810,381,115.32
5. Step 5: Solve for x
   x = 144,810,381,115.32/414,308.71
6. Step 6: Final answer
   x = 349,522.90