Finding the Fourth Proportional to 82,870.10, 124,323.15 and 30,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   82,870.10 : 124,323.15 = 30,279.50 : x
2. Step 2: Convert to fraction form
   82,870.10/124,323.15 = 30,279.50/x
3. Step 3: Cross multiply
   82,870.10x = 124,323.15 × 30,279.50
4. Step 4: Simplify right side
   82,870.10x = 3,764,442,820.43
5. Step 5: Solve for x
   x = 3,764,442,820.43/82,870.10
6. Step 6: Final answer
   x = 45,425.83