Finding the Fourth Proportional to 100,838.68, 150,842.46 and 82,867

Step by Step Solution

1. Step 1: Write the proportion equation
   100,838.68 : 150,842.46 = 82,867 : x
2. Step 2: Convert to fraction form
   100,838.68/150,842.46 = 82,867/x
3. Step 3: Cross multiply
   100,838.68x = 150,842.46 × 82,867
4. Step 4: Simplify right side
   100,838.68x = 12,499,862,132.82
5. Step 5: Solve for x
   x = 12,499,862,132.82/100,838.68
6. Step 6: Final answer
   x = 123,959.00