Finding the Fourth Proportional to 51,223.39, 70,676.25 and 31,079.80

Step by Step Solution

1. Step 1: Write the proportion equation
   51,223.39 : 70,676.25 = 31,079.80 : x
2. Step 2: Convert to fraction form
   51,223.39/70,676.25 = 31,079.80/x
3. Step 3: Cross multiply
   51,223.39x = 70,676.25 × 31,079.80
4. Step 4: Simplify right side
   51,223.39x = 2,196,603,686.55
5. Step 5: Solve for x
   x = 2,196,603,686.55/51,223.39
6. Step 6: Final answer
   x = 42,882.83