Finding the Fourth Proportional to 404,535.41, 558,272.25 and 220,784.01

Step by Step Solution

1. Step 1: Write the proportion equation
   404,535.41 : 558,272.25 = 220,784.01 : x
2. Step 2: Convert to fraction form
   404,535.41/558,272.25 = 220,784.01/x
3. Step 3: Cross multiply
   404,535.41x = 558,272.25 × 220,784.01
4. Step 4: Simplify right side
   404,535.41x = 123,257,586,026.72
5. Step 5: Solve for x
   x = 123,257,586,026.72/404,535.41
6. Step 6: Final answer
   x = 304,689.24