Finding the Fourth Proportional to 72.91, 109.37 and 34.43

Step by Step Solution

1. Step 1: Write the proportion equation
   72.91 : 109.37 = 34.43 : x
2. Step 2: Convert to fraction form
   72.91/109.37 = 34.43/x
3. Step 3: Cross multiply
   72.91x = 109.37 × 34.43
4. Step 4: Simplify right side
   72.91x = 3,765.61
5. Step 5: Solve for x
   x = 3,765.61/72.91
6. Step 6: Final answer
   x = 51.65