Finding the Fourth Proportional to 89.94, 134.58 and 74.73

Step by Step Solution

1. Step 1: Write the proportion equation
   89.94 : 134.58 = 74.73 : x
2. Step 2: Convert to fraction form
   89.94/134.58 = 74.73/x
3. Step 3: Cross multiply
   89.94x = 134.58 × 74.73
4. Step 4: Simplify right side
   89.94x = 10,057.16
5. Step 5: Solve for x
   x = 10,057.16/89.94
6. Step 6: Final answer
   x = 111.82