Finding the Fourth Proportional to 82.81, 124.17 and 46.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82.81 : 124.17 = 46.72 : x
2. Step 2: Convert to fraction form
   82.81/124.17 = 46.72/x
3. Step 3: Cross multiply
   82.81x = 124.17 × 46.72
4. Step 4: Simplify right side
   82.81x = 5,801.22
5. Step 5: Solve for x
   x = 5,801.22/82.81
6. Step 6: Final answer
   x = 70.05