Finding the Fourth Proportional to 89.67, 134.52 and 28.81

Step by Step Solution

1. Step 1: Write the proportion equation
   89.67 : 134.52 = 28.81 : x
2. Step 2: Convert to fraction form
   89.67/134.52 = 28.81/x
3. Step 3: Cross multiply
   89.67x = 134.52 × 28.81
4. Step 4: Simplify right side
   89.67x = 3,875.52
5. Step 5: Solve for x
   x = 3,875.52/89.67
6. Step 6: Final answer
   x = 43.22