Finding the Fourth Proportional to 404,531.86, 558,267.37 and 220,780.46

Step by Step Solution

1. Step 1: Write the proportion equation
   404,531.86 : 558,267.37 = 220,780.46 : x
2. Step 2: Convert to fraction form
   404,531.86/558,267.37 = 220,780.46/x
3. Step 3: Cross multiply
   404,531.86x = 558,267.37 × 220,780.46
4. Step 4: Simplify right side
   404,531.86x = 123,254,526,751.59
5. Step 5: Solve for x
   x = 123,254,526,751.59/404,531.86
6. Step 6: Final answer
   x = 304,684.35