Finding the Fourth Proportional to 82.01, 122.86 and 45.83

Step by Step Solution

1. Step 1: Write the proportion equation
   82.01 : 122.86 = 45.83 : x
2. Step 2: Convert to fraction form
   82.01/122.86 = 45.83/x
3. Step 3: Cross multiply
   82.01x = 122.86 × 45.83
4. Step 4: Simplify right side
   82.01x = 5,631.04
5. Step 5: Solve for x
   x = 5,631.04/82.01
6. Step 6: Final answer
   x = 68.66