Finding the Fourth Proportional to 82,170.06, 123,254.82 and 19,840.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,170.06 : 123,254.82 = 19,840.56 : x
2. Step 2: Convert to fraction form
   82,170.06/123,254.82 = 19,840.56/x
3. Step 3: Cross multiply
   82,170.06x = 123,254.82 × 19,840.56
4. Step 4: Simplify right side
   82,170.06x = 2,445,444,651.50
5. Step 5: Solve for x
   x = 2,445,444,651.50/82,170.06
6. Step 6: Final answer
   x = 29,760.77