Finding the Fourth Proportional to 625,662, 863,408.43 and 339,174.72

Step by Step Solution

1. Step 1: Write the proportion equation
   625,662 : 863,408.43 = 339,174.72 : x
2. Step 2: Convert to fraction form
   625,662/863,408.43 = 339,174.72/x
3. Step 3: Cross multiply
   625,662x = 863,408.43 × 339,174.72
4. Step 4: Simplify right side
   625,662x = 292,846,312,490.89
5. Step 5: Solve for x
   x = 292,846,312,490.89/625,662
6. Step 6: Final answer
   x = 468,058.33