Finding the Fourth Proportional to 89.39, 134.29 and 52.92

Step by Step Solution

1. Step 1: Write the proportion equation
   89.39 : 134.29 = 52.92 : x
2. Step 2: Convert to fraction form
   89.39/134.29 = 52.92/x
3. Step 3: Cross multiply
   89.39x = 134.29 × 52.92
4. Step 4: Simplify right side
   89.39x = 7,106.69
5. Step 5: Solve for x
   x = 7,106.69/89.39
6. Step 6: Final answer
   x = 79.50