Finding the Fourth Proportional to 403,705.59, 557,111.11 and 222,413.33

Step by Step Solution

1. Step 1: Write the proportion equation
   403,705.59 : 557,111.11 = 222,413.33 : x
2. Step 2: Convert to fraction form
   403,705.59/557,111.11 = 222,413.33/x
3. Step 3: Cross multiply
   403,705.59x = 557,111.11 × 222,413.33
4. Step 4: Simplify right side
   403,705.59x = 123,908,937,155.10
5. Step 5: Solve for x
   x = 123,908,937,155.10/403,705.59
6. Step 6: Final answer
   x = 306,928.96