Finding the Fourth Proportional to 51,255.55, 70,669.82 and 42,149.09

Step by Step Solution

1. Step 1: Write the proportion equation
   51,255.55 : 70,669.82 = 42,149.09 : x
2. Step 2: Convert to fraction form
   51,255.55/70,669.82 = 42,149.09/x
3. Step 3: Cross multiply
   51,255.55x = 70,669.82 × 42,149.09
4. Step 4: Simplify right side
   51,255.55x = 2,978,668,708.84
5. Step 5: Solve for x
   x = 2,978,668,708.84/51,255.55
6. Step 6: Final answer
   x = 58,114.07