Finding the Fourth Proportional to 89.18, 133.71 and 43.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89.18 : 133.71 = 43.50 : x
2. Step 2: Convert to fraction form
   89.18/133.71 = 43.50/x
3. Step 3: Cross multiply
   89.18x = 133.71 × 43.50
4. Step 4: Simplify right side
   89.18x = 5,816.39
5. Step 5: Solve for x
   x = 5,816.39/89.18
6. Step 6: Final answer
   x = 65.22