Finding the Fourth Proportional to 875,424.72, 1,313,292.72 and 299,016.72

Step by Step Solution

1. Step 1: Write the proportion equation
   875,424.72 : 1,313,292.72 = 299,016.72 : x
2. Step 2: Convert to fraction form
   875,424.72/1,313,292.72 = 299,016.72/x
3. Step 3: Cross multiply
   875,424.72x = 1,313,292.72 × 299,016.72
4. Step 4: Simplify right side
   875,424.72x = 392,696,481,534.28
5. Step 5: Solve for x
   x = 392,696,481,534.28/875,424.72
6. Step 6: Final answer
   x = 448,578.24