Finding the Fourth Proportional to 82.05, 123.18 and 46

Step by Step Solution

1. Step 1: Write the proportion equation
   82.05 : 123.18 = 46 : x
2. Step 2: Convert to fraction form
   82.05/123.18 = 46/x
3. Step 3: Cross multiply
   82.05x = 123.18 × 46
4. Step 4: Simplify right side
   82.05x = 5,666.28
5. Step 5: Solve for x
   x = 5,666.28/82.05
6. Step 6: Final answer
   x = 69.06