Finding the Fourth Proportional to 404,413.35, 607,112.10 and 204,630.90

Step by Step Solution

1. Step 1: Write the proportion equation
   404,413.35 : 607,112.10 = 204,630.90 : x
2. Step 2: Convert to fraction form
   404,413.35/607,112.10 = 204,630.90/x
3. Step 3: Cross multiply
   404,413.35x = 607,112.10 × 204,630.90
4. Step 4: Simplify right side
   404,413.35x = 124,233,895,423.89
5. Step 5: Solve for x
   x = 124,233,895,423.89/404,413.35
6. Step 6: Final answer
   x = 307,195.34