Finding the Fourth Proportional to 81,651.50, 122,485 and 31,735.46

Step by Step Solution

1. Step 1: Write the proportion equation
   81,651.50 : 122,485 = 31,735.46 : x
2. Step 2: Convert to fraction form
   81,651.50/122,485 = 31,735.46/x
3. Step 3: Cross multiply
   81,651.50x = 122,485 × 31,735.46
4. Step 4: Simplify right side
   81,651.50x = 3,887,117,818.10
5. Step 5: Solve for x
   x = 3,887,117,818.10/81,651.50
6. Step 6: Final answer
   x = 47,606.20