Finding the Fourth Proportional to 458,321.83, 687,472.18 and 269,976.98

Step by Step Solution

1. Step 1: Write the proportion equation
   458,321.83 : 687,472.18 = 269,976.98 : x
2. Step 2: Convert to fraction form
   458,321.83/687,472.18 = 269,976.98/x
3. Step 3: Cross multiply
   458,321.83x = 687,472.18 × 269,976.98
4. Step 4: Simplify right side
   458,321.83x = 185,601,664,034.15
5. Step 5: Solve for x
   x = 185,601,664,034.15/458,321.83
6. Step 6: Final answer
   x = 404,959.25