Finding the Fourth Proportional to 51,169.94, 70,595.78 and 31,012.28

Step by Step Solution

1. Step 1: Write the proportion equation
   51,169.94 : 70,595.78 = 31,012.28 : x
2. Step 2: Convert to fraction form
   51,169.94/70,595.78 = 31,012.28/x
3. Step 3: Cross multiply
   51,169.94x = 70,595.78 × 31,012.28
4. Step 4: Simplify right side
   51,169.94x = 2,189,336,096.18
5. Step 5: Solve for x
   x = 2,189,336,096.18/51,169.94
6. Step 6: Final answer
   x = 42,785.59