Finding the Fourth Proportional to 89.43, 134.16 and 43.75

Step by Step Solution

1. Step 1: Write the proportion equation
   89.43 : 134.16 = 43.75 : x
2. Step 2: Convert to fraction form
   89.43/134.16 = 43.75/x
3. Step 3: Cross multiply
   89.43x = 134.16 × 43.75
4. Step 4: Simplify right side
   89.43x = 5,868.83
5. Step 5: Solve for x
   x = 5,868.83/89.43
6. Step 6: Final answer
   x = 65.62