Finding the Fourth Proportional to 82,321.04, 123,481.94 and 19,991.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,321.04 : 123,481.94 = 19,991.56 : x
2. Step 2: Convert to fraction form
   82,321.04/123,481.94 = 19,991.56/x
3. Step 3: Cross multiply
   82,321.04x = 123,481.94 × 19,991.56
4. Step 4: Simplify right side
   82,321.04x = 2,468,596,612.43
5. Step 5: Solve for x
   x = 2,468,596,612.43/82,321.04
6. Step 6: Final answer
   x = 29,987.43