Finding the Fourth Proportional to 82,321.83, 113,609.38 and 50,486.40

Step by Step Solution

1. Step 1: Write the proportion equation
   82,321.83 : 113,609.38 = 50,486.40 : x
2. Step 2: Convert to fraction form
   82,321.83/113,609.38 = 50,486.40/x
3. Step 3: Cross multiply
   82,321.83x = 113,609.38 × 50,486.40
4. Step 4: Simplify right side
   82,321.83x = 5,735,728,996.91
5. Step 5: Solve for x
   x = 5,735,728,996.91/82,321.83
6. Step 6: Final answer
   x = 69,674.46