Finding the Fourth Proportional to 89.56, 134.35 and 28.69

Step by Step Solution

1. Step 1: Write the proportion equation
   89.56 : 134.35 = 28.69 : x
2. Step 2: Convert to fraction form
   89.56/134.35 = 28.69/x
3. Step 3: Cross multiply
   89.56x = 134.35 × 28.69
4. Step 4: Simplify right side
   89.56x = 3,854.17
5. Step 5: Solve for x
   x = 3,854.17/89.56
6. Step 6: Final answer
   x = 43.04