Finding the Fourth Proportional to 81,500.69, 122,240.64 and 31,546.61

Step by Step Solution

1. Step 1: Write the proportion equation
   81,500.69 : 122,240.64 = 31,546.61 : x
2. Step 2: Convert to fraction form
   81,500.69/122,240.64 = 31,546.61/x
3. Step 3: Cross multiply
   81,500.69x = 122,240.64 × 31,546.61
4. Step 4: Simplify right side
   81,500.69x = 3,856,277,185.03
5. Step 5: Solve for x
   x = 3,856,277,185.03/81,500.69
6. Step 6: Final answer
   x = 47,315.89