Finding the Fourth Proportional to 81,510.72, 122,255.61 and 31,556.58

Step by Step Solution

1. Step 1: Write the proportion equation
   81,510.72 : 122,255.61 = 31,556.58 : x
2. Step 2: Convert to fraction form
   81,510.72/122,255.61 = 31,556.58/x
3. Step 3: Cross multiply
   81,510.72x = 122,255.61 × 31,556.58
4. Step 4: Simplify right side
   81,510.72x = 3,857,968,937.41
5. Step 5: Solve for x
   x = 3,857,968,937.41/81,510.72
6. Step 6: Final answer
   x = 47,330.82