Finding the Fourth Proportional to 465,651.09, 697,892.56 and 199,098.72

Step by Step Solution

1. Step 1: Write the proportion equation
   465,651.09 : 697,892.56 = 199,098.72 : x
2. Step 2: Convert to fraction form
   465,651.09/697,892.56 = 199,098.72/x
3. Step 3: Cross multiply
   465,651.09x = 697,892.56 × 199,098.72
4. Step 4: Simplify right side
   465,651.09x = 138,949,514,895.78
5. Step 5: Solve for x
   x = 138,949,514,895.78/465,651.09
6. Step 6: Final answer
   x = 298,398.35