Finding the Fourth Proportional to 81,645.88, 122,410.86 and 31,683.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,645.88 : 122,410.86 = 31,683.82 : x
2. Step 2: Convert to fraction form
   81,645.88/122,410.86 = 31,683.82/x
3. Step 3: Cross multiply
   81,645.88x = 122,410.86 × 31,683.82
4. Step 4: Simplify right side
   81,645.88x = 3,878,443,654.29
5. Step 5: Solve for x
   x = 3,878,443,654.29/81,645.88
6. Step 6: Final answer
   x = 47,503.24