Finding the Fourth Proportional to 82,321.74, 113,609.25 and 50,486.31

Step by Step Solution

1. Step 1: Write the proportion equation
   82,321.74 : 113,609.25 = 50,486.31 : x
2. Step 2: Convert to fraction form
   82,321.74/113,609.25 = 50,486.31/x
3. Step 3: Cross multiply
   82,321.74x = 113,609.25 × 50,486.31
4. Step 4: Simplify right side
   82,321.74x = 5,735,711,814.37
5. Step 5: Solve for x
   x = 5,735,711,814.37/82,321.74
6. Step 6: Final answer
   x = 69,674.33