Finding the Fourth Proportional to 81,697.94, 122,498.50 and 31,100.77

Step by Step Solution

1. Step 1: Write the proportion equation
   81,697.94 : 122,498.50 = 31,100.77 : x
2. Step 2: Convert to fraction form
   81,697.94/122,498.50 = 31,100.77/x
3. Step 3: Cross multiply
   81,697.94x = 122,498.50 × 31,100.77
4. Step 4: Simplify right side
   81,697.94x = 3,809,797,673.85
5. Step 5: Solve for x
   x = 3,809,797,673.85/81,697.94
6. Step 6: Final answer
   x = 46,632.73