Finding the Fourth Proportional to 82.29, 123.46 and 47.99

Step by Step Solution

1. Step 1: Write the proportion equation
   82.29 : 123.46 = 47.99 : x
2. Step 2: Convert to fraction form
   82.29/123.46 = 47.99/x
3. Step 3: Cross multiply
   82.29x = 123.46 × 47.99
4. Step 4: Simplify right side
   82.29x = 5,925.03
5. Step 5: Solve for x
   x = 5,925.03/82.29
6. Step 6: Final answer
   x = 72.00