Finding the Fourth Proportional to 72.51, 108.69 and 52.94

Step by Step Solution

1. Step 1: Write the proportion equation
   72.51 : 108.69 = 52.94 : x
2. Step 2: Convert to fraction form
   72.51/108.69 = 52.94/x
3. Step 3: Cross multiply
   72.51x = 108.69 × 52.94
4. Step 4: Simplify right side
   72.51x = 5,754.05
5. Step 5: Solve for x
   x = 5,754.05/72.51
6. Step 6: Final answer
   x = 79.36