Finding the Fourth Proportional to 82,172.06, 123,257.82 and 19,842.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,172.06 : 123,257.82 = 19,842.56 : x
2. Step 2: Convert to fraction form
   82,172.06/123,257.82 = 19,842.56/x
3. Step 3: Cross multiply
   82,172.06x = 123,257.82 × 19,842.56
4. Step 4: Simplify right side
   82,172.06x = 2,445,750,688.82
5. Step 5: Solve for x
   x = 2,445,750,688.82/82,172.06
6. Step 6: Final answer
   x = 29,763.77