Finding the Fourth Proportional to 89.91, 134.34 and 73.46

Step by Step Solution

1. Step 1: Write the proportion equation
   89.91 : 134.34 = 73.46 : x
2. Step 2: Convert to fraction form
   89.91/134.34 = 73.46/x
3. Step 3: Cross multiply
   89.91x = 134.34 × 73.46
4. Step 4: Simplify right side
   89.91x = 9,867.94
5. Step 5: Solve for x
   x = 9,867.94/89.91
6. Step 6: Final answer
   x = 109.75