Finding the Fourth Proportional to 51,269.34, 70,756.56 and 31,121.59

Step by Step Solution

1. Step 1: Write the proportion equation
   51,269.34 : 70,756.56 = 31,121.59 : x
2. Step 2: Convert to fraction form
   51,269.34/70,756.56 = 31,121.59/x
3. Step 3: Cross multiply
   51,269.34x = 70,756.56 × 31,121.59
4. Step 4: Simplify right side
   51,269.34x = 2,202,056,650.13
5. Step 5: Solve for x
   x = 2,202,056,650.13/51,269.34
6. Step 6: Final answer
   x = 42,950.75