Finding the Fourth Proportional to 398,046.72, 549,126.88 and 268,943.52

Step by Step Solution

1. Step 1: Write the proportion equation
   398,046.72 : 549,126.88 = 268,943.52 : x
2. Step 2: Convert to fraction form
   398,046.72/549,126.88 = 268,943.52/x
3. Step 3: Cross multiply
   398,046.72x = 549,126.88 × 268,943.52
4. Step 4: Simplify right side
   398,046.72x = 147,684,116,033.82
5. Step 5: Solve for x
   x = 147,684,116,033.82/398,046.72
6. Step 6: Final answer
   x = 371,022.07