Finding the Fourth Proportional to 82.23, 113.59 and 65.83

Step by Step Solution

1. Step 1: Write the proportion equation
   82.23 : 113.59 = 65.83 : x
2. Step 2: Convert to fraction form
   82.23/113.59 = 65.83/x
3. Step 3: Cross multiply
   82.23x = 113.59 × 65.83
4. Step 4: Simplify right side
   82.23x = 7,477.63
5. Step 5: Solve for x
   x = 7,477.63/82.23
6. Step 6: Final answer
   x = 90.94