Finding the Fourth Proportional to 406,581.12, 561,101.58 and 245,433.24

Step by Step Solution

1. Step 1: Write the proportion equation
   406,581.12 : 561,101.58 = 245,433.24 : x
2. Step 2: Convert to fraction form
   406,581.12/561,101.58 = 245,433.24/x
3. Step 3: Cross multiply
   406,581.12x = 561,101.58 × 245,433.24
4. Step 4: Simplify right side
   406,581.12x = 137,712,978,748.52
5. Step 5: Solve for x
   x = 137,712,978,748.52/406,581.12
6. Step 6: Final answer
   x = 338,709.72