Finding the Fourth Proportional to 89.01, 132.87 and 73.62

Step by Step Solution

1. Step 1: Write the proportion equation
   89.01 : 132.87 = 73.62 : x
2. Step 2: Convert to fraction form
   89.01/132.87 = 73.62/x
3. Step 3: Cross multiply
   89.01x = 132.87 × 73.62
4. Step 4: Simplify right side
   89.01x = 9,781.89
5. Step 5: Solve for x
   x = 9,781.89/89.01
6. Step 6: Final answer
   x = 109.90