Finding the Fourth Proportional to 51,173.94, 70,601.30 and 31,016.28

Step by Step Solution

1. Step 1: Write the proportion equation
   51,173.94 : 70,601.30 = 31,016.28 : x
2. Step 2: Convert to fraction form
   51,173.94/70,601.30 = 31,016.28/x
3. Step 3: Cross multiply
   51,173.94x = 70,601.30 × 31,016.28
4. Step 4: Simplify right side
   51,173.94x = 2,189,789,689.16
5. Step 5: Solve for x
   x = 2,189,789,689.16/51,173.94
6. Step 6: Final answer
   x = 42,791.11