Finding the Fourth Proportional to 82.01, 123.01 and 47.31

Step by Step Solution

1. Step 1: Write the proportion equation
   82.01 : 123.01 = 47.31 : x
2. Step 2: Convert to fraction form
   82.01/123.01 = 47.31/x
3. Step 3: Cross multiply
   82.01x = 123.01 × 47.31
4. Step 4: Simplify right side
   82.01x = 5,819.66
5. Step 5: Solve for x
   x = 5,819.66/82.01
6. Step 6: Final answer
   x = 70.96