Finding the Fourth Proportional to 88.04, 120.18 and 86.82

Step by Step Solution

1. Step 1: Write the proportion equation
   88.04 : 120.18 = 86.82 : x
2. Step 2: Convert to fraction form
   88.04/120.18 = 86.82/x
3. Step 3: Cross multiply
   88.04x = 120.18 × 86.82
4. Step 4: Simplify right side
   88.04x = 10,434.03
5. Step 5: Solve for x
   x = 10,434.03/88.04
6. Step 6: Final answer
   x = 118.52