Finding the Fourth Proportional to 627,105.54, 865,764.73 and 412,868.39

Step by Step Solution

1. Step 1: Write the proportion equation
   627,105.54 : 865,764.73 = 412,868.39 : x
2. Step 2: Convert to fraction form
   627,105.54/865,764.73 = 412,868.39/x
3. Step 3: Cross multiply
   627,105.54x = 865,764.73 × 412,868.39
4. Step 4: Simplify right side
   627,105.54x = 357,446,890,089.88
5. Step 5: Solve for x
   x = 357,446,890,089.88/627,105.54
6. Step 6: Final answer
   x = 569,994.79