Finding the Fourth Proportional to 51,392.55, 70,943.58 and 31,255.89

Step by Step Solution

1. Step 1: Write the proportion equation
   51,392.55 : 70,943.58 = 31,255.89 : x
2. Step 2: Convert to fraction form
   51,392.55/70,943.58 = 31,255.89/x
3. Step 3: Cross multiply
   51,392.55x = 70,943.58 × 31,255.89
4. Step 4: Simplify right side
   51,392.55x = 2,217,404,654.55
5. Step 5: Solve for x
   x = 2,217,404,654.55/51,392.55
6. Step 6: Final answer
   x = 43,146.43