Finding the Fourth Proportional to 82.08, 123.06 and 30.69

Step by Step Solution

1. Step 1: Write the proportion equation
   82.08 : 123.06 = 30.69 : x
2. Step 2: Convert to fraction form
   82.08/123.06 = 30.69/x
3. Step 3: Cross multiply
   82.08x = 123.06 × 30.69
4. Step 4: Simplify right side
   82.08x = 3,776.71
5. Step 5: Solve for x
   x = 3,776.71/82.08
6. Step 6: Final answer
   x = 46.01