Finding the Fourth Proportional to 401,342.61, 553,877.69 and 222,494.61

Step by Step Solution

1. Step 1: Write the proportion equation
   401,342.61 : 553,877.69 = 222,494.61 : x
2. Step 2: Convert to fraction form
   401,342.61/553,877.69 = 222,494.61/x
3. Step 3: Cross multiply
   401,342.61x = 553,877.69 × 222,494.61
4. Step 4: Simplify right side
   401,342.61x = 123,234,799,511.78
5. Step 5: Solve for x
   x = 123,234,799,511.78/401,342.61
6. Step 6: Final answer
   x = 307,056.36