Finding the Fourth Proportional to 81,959.41, 113,120.82 and 51,724.43

Step by Step Solution

1. Step 1: Write the proportion equation
   81,959.41 : 113,120.82 = 51,724.43 : x
2. Step 2: Convert to fraction form
   81,959.41/113,120.82 = 51,724.43/x
3. Step 3: Cross multiply
   81,959.41x = 113,120.82 × 51,724.43
4. Step 4: Simplify right side
   81,959.41x = 5,851,109,935.63
5. Step 5: Solve for x
   x = 5,851,109,935.63/81,959.41
6. Step 6: Final answer
   x = 71,390.34