Finding the Fourth Proportional to 82.34, 123.42 and 46.20

Step by Step Solution

1. Step 1: Write the proportion equation
   82.34 : 123.42 = 46.20 : x
2. Step 2: Convert to fraction form
   82.34/123.42 = 46.20/x
3. Step 3: Cross multiply
   82.34x = 123.42 × 46.20
4. Step 4: Simplify right side
   82.34x = 5,701.60
5. Step 5: Solve for x
   x = 5,701.60/82.34
6. Step 6: Final answer
   x = 69.24