Finding the Fourth Proportional to 72.95, 100.71 and 65.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72.95 : 100.71 = 65.25 : x
2. Step 2: Convert to fraction form
   72.95/100.71 = 65.25/x
3. Step 3: Cross multiply
   72.95x = 100.71 × 65.25
4. Step 4: Simplify right side
   72.95x = 6,571.33
5. Step 5: Solve for x
   x = 6,571.33/72.95
6. Step 6: Final answer
   x = 90.09