Finding the Fourth Proportional to 51,851.54, 71,560.50 and 31,721.83

Step by Step Solution

1. Step 1: Write the proportion equation
   51,851.54 : 71,560.50 = 31,721.83 : x
2. Step 2: Convert to fraction form
   51,851.54/71,560.50 = 31,721.83/x
3. Step 3: Cross multiply
   51,851.54x = 71,560.50 × 31,721.83
4. Step 4: Simplify right side
   51,851.54x = 2,270,030,015.72
5. Step 5: Solve for x
   x = 2,270,030,015.72/51,851.54
6. Step 6: Final answer
   x = 43,779.41