Finding the Fourth Proportional to 92.96, 139.39 and 72.69

Step by Step Solution

1. Step 1: Write the proportion equation
   92.96 : 139.39 = 72.69 : x
2. Step 2: Convert to fraction form
   92.96/139.39 = 72.69/x
3. Step 3: Cross multiply
   92.96x = 139.39 × 72.69
4. Step 4: Simplify right side
   92.96x = 10,132.26
5. Step 5: Solve for x
   x = 10,132.26/92.96
6. Step 6: Final answer
   x = 109.00