Finding the Fourth Proportional to 82.23, 123.39 and 61.98

Step by Step Solution

1. Step 1: Write the proportion equation
   82.23 : 123.39 = 61.98 : x
2. Step 2: Convert to fraction form
   82.23/123.39 = 61.98/x
3. Step 3: Cross multiply
   82.23x = 123.39 × 61.98
4. Step 4: Simplify right side
   82.23x = 7,647.71
5. Step 5: Solve for x
   x = 7,647.71/82.23
6. Step 6: Final answer
   x = 93.00