Finding the Fourth Proportional to 96.71, 145.71 and 89.33

Step by Step Solution

1. Step 1: Write the proportion equation
   96.71 : 145.71 = 89.33 : x
2. Step 2: Convert to fraction form
   96.71/145.71 = 89.33/x
3. Step 3: Cross multiply
   96.71x = 145.71 × 89.33
4. Step 4: Simplify right side
   96.71x = 13,016.27
5. Step 5: Solve for x
   x = 13,016.27/96.71
6. Step 6: Final answer
   x = 134.59