Finding the Fourth Proportional to 81,654.79, 122,434.50 and 31,676.48

Step by Step Solution

1. Step 1: Write the proportion equation
   81,654.79 : 122,434.50 = 31,676.48 : x
2. Step 2: Convert to fraction form
   81,654.79/122,434.50 = 31,676.48/x
3. Step 3: Cross multiply
   81,654.79x = 122,434.50 × 31,676.48
4. Step 4: Simplify right side
   81,654.79x = 3,878,293,990.56
5. Step 5: Solve for x
   x = 3,878,293,990.56/81,654.79
6. Step 6: Final answer
   x = 47,496.22