Finding the Fourth Proportional to 82,120.82, 123,180.95 and 19,791.32

Step by Step Solution

1. Step 1: Write the proportion equation
   82,120.82 : 123,180.95 = 19,791.32 : x
2. Step 2: Convert to fraction form
   82,120.82/123,180.95 = 19,791.32/x
3. Step 3: Cross multiply
   82,120.82x = 123,180.95 × 19,791.32
4. Step 4: Simplify right side
   82,120.82x = 2,437,913,032.93
5. Step 5: Solve for x
   x = 2,437,913,032.93/82,120.82
6. Step 6: Final answer
   x = 29,686.91