Finding the Fourth Proportional to 73.09, 100.89 and 57.34

Step by Step Solution

1. Step 1: Write the proportion equation
   73.09 : 100.89 = 57.34 : x
2. Step 2: Convert to fraction form
   73.09/100.89 = 57.34/x
3. Step 3: Cross multiply
   73.09x = 100.89 × 57.34
4. Step 4: Simplify right side
   73.09x = 5,785.03
5. Step 5: Solve for x
   x = 5,785.03/73.09
6. Step 6: Final answer
   x = 79.15