Finding the Fourth Proportional to 72.69, 109.01 and 34.13

Step by Step Solution

1. Step 1: Write the proportion equation
   72.69 : 109.01 = 34.13 : x
2. Step 2: Convert to fraction form
   72.69/109.01 = 34.13/x
3. Step 3: Cross multiply
   72.69x = 109.01 × 34.13
4. Step 4: Simplify right side
   72.69x = 3,719.80
5. Step 5: Solve for x
   x = 3,719.80/72.69
6. Step 6: Final answer
   x = 51.17