Finding the Fourth Proportional to 268,111.42, 402,216.56 and 88,206.96

Step by Step Solution

1. Step 1: Write the proportion equation
   268,111.42 : 402,216.56 = 88,206.96 : x
2. Step 2: Convert to fraction form
   268,111.42/402,216.56 = 88,206.96/x
3. Step 3: Cross multiply
   268,111.42x = 402,216.56 × 88,206.96
4. Step 4: Simplify right side
   268,111.42x = 35,478,300,019.26
5. Step 5: Solve for x
   x = 35,478,300,019.26/268,111.42
6. Step 6: Final answer
   x = 132,326.70