Finding the Fourth Proportional to 663,127.69, 915,116.22 and 361,321.69

Step by Step Solution

1. Step 1: Write the proportion equation
   663,127.69 : 915,116.22 = 361,321.69 : x
2. Step 2: Convert to fraction form
   663,127.69/915,116.22 = 361,321.69/x
3. Step 3: Cross multiply
   663,127.69x = 915,116.22 × 361,321.69
4. Step 4: Simplify right side
   663,127.69x = 330,651,335,965.72
5. Step 5: Solve for x
   x = 330,651,335,965.72/663,127.69
6. Step 6: Final answer
   x = 498,623.93