Finding the Fourth Proportional to 89.42, 134.06 and 76.52

Step by Step Solution

1. Step 1: Write the proportion equation
   89.42 : 134.06 = 76.52 : x
2. Step 2: Convert to fraction form
   89.42/134.06 = 76.52/x
3. Step 3: Cross multiply
   89.42x = 134.06 × 76.52
4. Step 4: Simplify right side
   89.42x = 10,258.27
5. Step 5: Solve for x
   x = 10,258.27/89.42
6. Step 6: Final answer
   x = 114.72