Finding the Fourth Proportional to 82,140.06, 123,209.82 and 19,810.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,140.06 : 123,209.82 = 19,810.56 : x
2. Step 2: Convert to fraction form
   82,140.06/123,209.82 = 19,810.56/x
3. Step 3: Cross multiply
   82,140.06x = 123,209.82 × 19,810.56
4. Step 4: Simplify right side
   82,140.06x = 2,440,855,531.70
5. Step 5: Solve for x
   x = 2,440,855,531.70/82,140.06
6. Step 6: Final answer
   x = 29,715.77