Finding the Fourth Proportional to 55,344.05, 76,374.42 and 31,470.72

Step by Step Solution

1. Step 1: Write the proportion equation
   55,344.05 : 76,374.42 = 31,470.72 : x
2. Step 2: Convert to fraction form
   55,344.05/76,374.42 = 31,470.72/x
3. Step 3: Cross multiply
   55,344.05x = 76,374.42 × 31,470.72
4. Step 4: Simplify right side
   55,344.05x = 2,403,557,986.98
5. Step 5: Solve for x
   x = 2,403,557,986.98/55,344.05
6. Step 6: Final answer
   x = 43,429.39