Finding the Fourth Proportional to 89.48, 134.43 and 77.33

Step by Step Solution

1. Step 1: Write the proportion equation
   89.48 : 134.43 = 77.33 : x
2. Step 2: Convert to fraction form
   89.48/134.43 = 77.33/x
3. Step 3: Cross multiply
   89.48x = 134.43 × 77.33
4. Step 4: Simplify right side
   89.48x = 10,395.52
5. Step 5: Solve for x
   x = 10,395.52/89.48
6. Step 6: Final answer
   x = 116.17