Finding the Fourth Proportional to 51,504.86, 71,083.76 and 31,087.98

Step by Step Solution

1. Step 1: Write the proportion equation
   51,504.86 : 71,083.76 = 31,087.98 : x
2. Step 2: Convert to fraction form
   51,504.86/71,083.76 = 31,087.98/x
3. Step 3: Cross multiply
   51,504.86x = 71,083.76 × 31,087.98
4. Step 4: Simplify right side
   51,504.86x = 2,209,850,509.20
5. Step 5: Solve for x
   x = 2,209,850,509.20/51,504.86
6. Step 6: Final answer
   x = 42,905.67