Finding the Fourth Proportional to 51,254.30, 70,736.01 and 31,109.60

Step by Step Solution

1. Step 1: Write the proportion equation
   51,254.30 : 70,736.01 = 31,109.60 : x
2. Step 2: Convert to fraction form
   51,254.30/70,736.01 = 31,109.60/x
3. Step 3: Cross multiply
   51,254.30x = 70,736.01 × 31,109.60
4. Step 4: Simplify right side
   51,254.30x = 2,200,568,976.70
5. Step 5: Solve for x
   x = 2,200,568,976.70/51,254.30
6. Step 6: Final answer
   x = 42,934.33