Finding the Fourth Proportional to 89.57, 134.16 and 43.88

Step by Step Solution

1. Step 1: Write the proportion equation
   89.57 : 134.16 = 43.88 : x
2. Step 2: Convert to fraction form
   89.57/134.16 = 43.88/x
3. Step 3: Cross multiply
   89.57x = 134.16 × 43.88
4. Step 4: Simplify right side
   89.57x = 5,886.27
5. Step 5: Solve for x
   x = 5,886.27/89.57
6. Step 6: Final answer
   x = 65.72