Finding the Fourth Proportional to 89.37, 134.08 and 43.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89.37 : 134.08 = 43.72 : x
2. Step 2: Convert to fraction form
   89.37/134.08 = 43.72/x
3. Step 3: Cross multiply
   89.37x = 134.08 × 43.72
4. Step 4: Simplify right side
   89.37x = 5,861.98
5. Step 5: Solve for x
   x = 5,861.98/89.37
6. Step 6: Final answer
   x = 65.59