Finding the Fourth Proportional to 456,406.24, 629,862.72 and 252,456.28

Step by Step Solution

1. Step 1: Write the proportion equation
   456,406.24 : 629,862.72 = 252,456.28 : x
2. Step 2: Convert to fraction form
   456,406.24/629,862.72 = 252,456.28/x
3. Step 3: Cross multiply
   456,406.24x = 629,862.72 × 252,456.28
4. Step 4: Simplify right side
   456,406.24x = 159,012,799,201.88
5. Step 5: Solve for x
   x = 159,012,799,201.88/456,406.24
6. Step 6: Final answer
   x = 348,401.90