Finding the Fourth Proportional to 268,111.16, 402,216.18 and 88,206.71

Step by Step Solution

1. Step 1: Write the proportion equation
   268,111.16 : 402,216.18 = 88,206.71 : x
2. Step 2: Convert to fraction form
   268,111.16/402,216.18 = 88,206.71/x
3. Step 3: Cross multiply
   268,111.16x = 402,216.18 × 88,206.71
4. Step 4: Simplify right side
   268,111.16x = 35,478,165,946.57
5. Step 5: Solve for x
   x = 35,478,165,946.57/268,111.16
6. Step 6: Final answer
   x = 132,326.33