Finding the Fourth Proportional to 406,898.78, 561,517.59 and 225,610.82

Step by Step Solution

1. Step 1: Write the proportion equation
   406,898.78 : 561,517.59 = 225,610.82 : x
2. Step 2: Convert to fraction form
   406,898.78/561,517.59 = 225,610.82/x
3. Step 3: Cross multiply
   406,898.78x = 561,517.59 × 225,610.82
4. Step 4: Simplify right side
   406,898.78x = 126,684,443,924.32
5. Step 5: Solve for x
   x = 126,684,443,924.32/406,898.78
6. Step 6: Final answer
   x = 311,341.42