Finding the Fourth Proportional to 72.69, 109.02 and 34.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72.69 : 109.02 = 34.17 : x
2. Step 2: Convert to fraction form
   72.69/109.02 = 34.17/x
3. Step 3: Cross multiply
   72.69x = 109.02 × 34.17
4. Step 4: Simplify right side
   72.69x = 3,725.21
5. Step 5: Solve for x
   x = 3,725.21/72.69
6. Step 6: Final answer
   x = 51.25