Finding the Fourth Proportional to 81,458.48, 122,111.98 and 31,571.12

Step by Step Solution

1. Step 1: Write the proportion equation
   81,458.48 : 122,111.98 = 31,571.12 : x
2. Step 2: Convert to fraction form
   81,458.48/122,111.98 = 31,571.12/x
3. Step 3: Cross multiply
   81,458.48x = 122,111.98 × 31,571.12
4. Step 4: Simplify right side
   81,458.48x = 3,855,211,974.02
5. Step 5: Solve for x
   x = 3,855,211,974.02/81,458.48
6. Step 6: Final answer
   x = 47,327.33