Finding the Fourth Proportional to 82,868.10, 124,320.15 and 30,277.50

Step by Step Solution

1. Step 1: Write the proportion equation
   82,868.10 : 124,320.15 = 30,277.50 : x
2. Step 2: Convert to fraction form
   82,868.10/124,320.15 = 30,277.50/x
3. Step 3: Cross multiply
   82,868.10x = 124,320.15 × 30,277.50
4. Step 4: Simplify right side
   82,868.10x = 3,764,103,341.63
5. Step 5: Solve for x
   x = 3,764,103,341.63/82,868.10
6. Step 6: Final answer
   x = 45,422.83