Finding the Fourth Proportional to 82.35, 123.21 and 62.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82.35 : 123.21 = 62.10 : x
2. Step 2: Convert to fraction form
   82.35/123.21 = 62.10/x
3. Step 3: Cross multiply
   82.35x = 123.21 × 62.10
4. Step 4: Simplify right side
   82.35x = 7,651.34
5. Step 5: Solve for x
   x = 7,651.34/82.35
6. Step 6: Final answer
   x = 92.91