Finding the Fourth Proportional to 404,364.72, 558,022.53 and 220,603.29

Step by Step Solution

1. Step 1: Write the proportion equation
   404,364.72 : 558,022.53 = 220,603.29 : x
2. Step 2: Convert to fraction form
   404,364.72/558,022.53 = 220,603.29/x
3. Step 3: Cross multiply
   404,364.72x = 558,022.53 × 220,603.29
4. Step 4: Simplify right side
   404,364.72x = 123,101,606,012.12
5. Step 5: Solve for x
   x = 123,101,606,012.12/404,364.72
6. Step 6: Final answer
   x = 304,432.11