Finding the Fourth Proportional to 82,510.50, 123,768.18 and 20,181

Step by Step Solution

1. Step 1: Write the proportion equation
   82,510.50 : 123,768.18 = 20,181 : x
2. Step 2: Convert to fraction form
   82,510.50/123,768.18 = 20,181/x
3. Step 3: Cross multiply
   82,510.50x = 123,768.18 × 20,181
4. Step 4: Simplify right side
   82,510.50x = 2,497,765,640.58
5. Step 5: Solve for x
   x = 2,497,765,640.58/82,510.50
6. Step 6: Final answer
   x = 30,272.09