Finding the Fourth Proportional to 82.77, 124.09 and 46.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82.77 : 124.09 = 46.72 : x
2. Step 2: Convert to fraction form
   82.77/124.09 = 46.72/x
3. Step 3: Cross multiply
   82.77x = 124.09 × 46.72
4. Step 4: Simplify right side
   82.77x = 5,797.52
5. Step 5: Solve for x
   x = 5,797.52/82.77
6. Step 6: Final answer
   x = 70.05