Finding the Fourth Proportional to 51,280.70, 70,788.96 and 31,144.10

Step by Step Solution

1. Step 1: Write the proportion equation
   51,280.70 : 70,788.96 = 31,144.10 : x
2. Step 2: Convert to fraction form
   51,280.70/70,788.96 = 31,144.10/x
3. Step 3: Cross multiply
   51,280.70x = 70,788.96 × 31,144.10
4. Step 4: Simplify right side
   51,280.70x = 2,204,658,095.19
5. Step 5: Solve for x
   x = 2,204,658,095.19/51,280.70
6. Step 6: Final answer
   x = 42,991.97