Finding the Fourth Proportional to 442,078.82, 663,122.78 and 353,892.90

Step by Step Solution

1. Step 1: Write the proportion equation
   442,078.82 : 663,122.78 = 353,892.90 : x
2. Step 2: Convert to fraction form
   442,078.82/663,122.78 = 353,892.90/x
3. Step 3: Cross multiply
   442,078.82x = 663,122.78 × 353,892.90
4. Step 4: Simplify right side
   442,078.82x = 234,674,441,900.80
5. Step 5: Solve for x
   x = 234,674,441,900.80/442,078.82
6. Step 6: Final answer
   x = 530,842.99