Finding the Fourth Proportional to 69.33, 103.89 and 53.25

Step by Step Solution

1. Step 1: Write the proportion equation
   69.33 : 103.89 = 53.25 : x
2. Step 2: Convert to fraction form
   69.33/103.89 = 53.25/x
3. Step 3: Cross multiply
   69.33x = 103.89 × 53.25
4. Step 4: Simplify right side
   69.33x = 5,532.14
5. Step 5: Solve for x
   x = 5,532.14/69.33
6. Step 6: Final answer
   x = 79.79