Finding the Fourth Proportional to 82,078.41, 123,117.60 and 19,748.91

Step by Step Solution

1. Step 1: Write the proportion equation
   82,078.41 : 123,117.60 = 19,748.91 : x
2. Step 2: Convert to fraction form
   82,078.41/123,117.60 = 19,748.91/x
3. Step 3: Cross multiply
   82,078.41x = 123,117.60 × 19,748.91
4. Step 4: Simplify right side
   82,078.41x = 2,431,438,401.82
5. Step 5: Solve for x
   x = 2,431,438,401.82/82,078.41
6. Step 6: Final answer
   x = 29,623.36