Finding the Fourth Proportional to 89.81, 134.69 and 75.37

Step by Step Solution

1. Step 1: Write the proportion equation
   89.81 : 134.69 = 75.37 : x
2. Step 2: Convert to fraction form
   89.81/134.69 = 75.37/x
3. Step 3: Cross multiply
   89.81x = 134.69 × 75.37
4. Step 4: Simplify right side
   89.81x = 10,150.54
5. Step 5: Solve for x
   x = 10,150.54/89.81
6. Step 6: Final answer
   x = 113.03