Finding the Fourth Proportional to 610,522.52, 842,572.82 and 338,678

Step by Step Solution

1. Step 1: Write the proportion equation
   610,522.52 : 842,572.82 = 338,678 : x
2. Step 2: Convert to fraction form
   610,522.52/842,572.82 = 338,678/x
3. Step 3: Cross multiply
   610,522.52x = 842,572.82 × 338,678
4. Step 4: Simplify right side
   610,522.52x = 285,360,877,531.96
5. Step 5: Solve for x
   x = 285,360,877,531.96/610,522.52
6. Step 6: Final answer
   x = 467,404.34