Finding the Fourth Proportional to 72.34, 108.51 and 33.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72.34 : 108.51 = 33.79 : x
2. Step 2: Convert to fraction form
   72.34/108.51 = 33.79/x
3. Step 3: Cross multiply
   72.34x = 108.51 × 33.79
4. Step 4: Simplify right side
   72.34x = 3,666.55
5. Step 5: Solve for x
   x = 3,666.55/72.34
6. Step 6: Final answer
   x = 50.69