Finding the Fourth Proportional to 72.56, 108.74 and 34.02

Step by Step Solution

1. Step 1: Write the proportion equation
   72.56 : 108.74 = 34.02 : x
2. Step 2: Convert to fraction form
   72.56/108.74 = 34.02/x
3. Step 3: Cross multiply
   72.56x = 108.74 × 34.02
4. Step 4: Simplify right side
   72.56x = 3,699.33
5. Step 5: Solve for x
   x = 3,699.33/72.56
6. Step 6: Final answer
   x = 50.98