Finding the Fourth Proportional to 82,311.81, 123,467.85 and 19,982.31

Step by Step Solution

1. Step 1: Write the proportion equation
   82,311.81 : 123,467.85 = 19,982.31 : x
2. Step 2: Convert to fraction form
   82,311.81/123,467.85 = 19,982.31/x
3. Step 3: Cross multiply
   82,311.81x = 123,467.85 × 19,982.31
4. Step 4: Simplify right side
   82,311.81x = 2,467,172,853.73
5. Step 5: Solve for x
   x = 2,467,172,853.73/82,311.81
6. Step 6: Final answer
   x = 29,973.50