Finding the Fourth Proportional to 82,271.28, 123,406.52 and 19,941.78

Step by Step Solution

1. Step 1: Write the proportion equation
   82,271.28 : 123,406.52 = 19,941.78 : x
2. Step 2: Convert to fraction form
   82,271.28/123,406.52 = 19,941.78/x
3. Step 3: Cross multiply
   82,271.28x = 123,406.52 × 19,941.78
4. Step 4: Simplify right side
   82,271.28x = 2,460,945,572.70
5. Step 5: Solve for x
   x = 2,460,945,572.70/82,271.28
6. Step 6: Final answer
   x = 29,912.57