Finding the Fourth Proportional to 88.82, 133.27 and 78.76

Step by Step Solution

1. Step 1: Write the proportion equation
   88.82 : 133.27 = 78.76 : x
2. Step 2: Convert to fraction form
   88.82/133.27 = 78.76/x
3. Step 3: Cross multiply
   88.82x = 133.27 × 78.76
4. Step 4: Simplify right side
   88.82x = 10,496.35
5. Step 5: Solve for x
   x = 10,496.35/88.82
6. Step 6: Final answer
   x = 118.18