Finding the Fourth Proportional to 81,732.69, 122,567.04 and 31,806.18

Step by Step Solution

1. Step 1: Write the proportion equation
   81,732.69 : 122,567.04 = 31,806.18 : x
2. Step 2: Convert to fraction form
   81,732.69/122,567.04 = 31,806.18/x
3. Step 3: Cross multiply
   81,732.69x = 122,567.04 × 31,806.18
4. Step 4: Simplify right side
   81,732.69x = 3,898,389,336.31
5. Step 5: Solve for x
   x = 3,898,389,336.31/81,732.69
6. Step 6: Final answer
   x = 47,696.82