Finding the Fourth Proportional to 81,906.24, 122,786.22 and 31,974.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,906.24 : 122,786.22 = 31,974.72 : x
2. Step 2: Convert to fraction form
   81,906.24/122,786.22 = 31,974.72/x
3. Step 3: Cross multiply
   81,906.24x = 122,786.22 × 31,974.72
4. Step 4: Simplify right side
   81,906.24x = 3,926,055,004.36
5. Step 5: Solve for x
   x = 3,926,055,004.36/81,906.24
6. Step 6: Final answer
   x = 47,933.53