Finding the Fourth Proportional to 73.40, 109.33 and 69.89

Step by Step Solution

1. Step 1: Write the proportion equation
   73.40 : 109.33 = 69.89 : x
2. Step 2: Convert to fraction form
   73.40/109.33 = 69.89/x
3. Step 3: Cross multiply
   73.40x = 109.33 × 69.89
4. Step 4: Simplify right side
   73.40x = 7,640.35
5. Step 5: Solve for x
   x = 7,640.35/73.40
6. Step 6: Final answer
   x = 104.10