Finding the Fourth Proportional to 81,644.48, 122,513.52 and 31,718.15

Step by Step Solution

1. Step 1: Write the proportion equation
   81,644.48 : 122,513.52 = 31,718.15 : x
2. Step 2: Convert to fraction form
   81,644.48/122,513.52 = 31,718.15/x
3. Step 3: Cross multiply
   81,644.48x = 122,513.52 × 31,718.15
4. Step 4: Simplify right side
   81,644.48x = 3,885,902,204.39
5. Step 5: Solve for x
   x = 3,885,902,204.39/81,644.48
6. Step 6: Final answer
   x = 47,595.41