Finding the Fourth Proportional to 82,872.10, 124,326.15 and 30,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   82,872.10 : 124,326.15 = 30,281.50 : x
2. Step 2: Convert to fraction form
   82,872.10/124,326.15 = 30,281.50/x
3. Step 3: Cross multiply
   82,872.10x = 124,326.15 × 30,281.50
4. Step 4: Simplify right side
   82,872.10x = 3,764,782,311.23
5. Step 5: Solve for x
   x = 3,764,782,311.23/82,872.10
6. Step 6: Final answer
   x = 45,428.83