Finding the Fourth Proportional to 72.56, 108.85 and 34.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72.56 : 108.85 = 34.06 : x
2. Step 2: Convert to fraction form
   72.56/108.85 = 34.06/x
3. Step 3: Cross multiply
   72.56x = 108.85 × 34.06
4. Step 4: Simplify right side
   72.56x = 3,707.53
5. Step 5: Solve for x
   x = 3,707.53/72.56
6. Step 6: Final answer
   x = 51.09