Finding the Fourth Proportional to 81,535.78, 112,471.59 and 51,273.10

Step by Step Solution

1. Step 1: Write the proportion equation
   81,535.78 : 112,471.59 = 51,273.10 : x
2. Step 2: Convert to fraction form
   81,535.78/112,471.59 = 51,273.10/x
3. Step 3: Cross multiply
   81,535.78x = 112,471.59 × 51,273.10
4. Step 4: Simplify right side
   81,535.78x = 5,766,767,081.23
5. Step 5: Solve for x
   x = 5,766,767,081.23/81,535.78
6. Step 6: Final answer
   x = 70,726.83