Finding the Fourth Proportional to 72.61, 108.86 and 34.07

Step by Step Solution

1. Step 1: Write the proportion equation
   72.61 : 108.86 = 34.07 : x
2. Step 2: Convert to fraction form
   72.61/108.86 = 34.07/x
3. Step 3: Cross multiply
   72.61x = 108.86 × 34.07
4. Step 4: Simplify right side
   72.61x = 3,708.86
5. Step 5: Solve for x
   x = 3,708.86/72.61
6. Step 6: Final answer
   x = 51.08