Finding the Fourth Proportional to 89.68, 134.34 and 75.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89.68 : 134.34 = 75.10 : x
2. Step 2: Convert to fraction form
   89.68/134.34 = 75.10/x
3. Step 3: Cross multiply
   89.68x = 134.34 × 75.10
4. Step 4: Simplify right side
   89.68x = 10,088.93
5. Step 5: Solve for x
   x = 10,088.93/89.68
6. Step 6: Final answer
   x = 112.50