Finding the Fourth Proportional to 55,550.72, 76,661.52 and 31,681.28

Step by Step Solution

1. Step 1: Write the proportion equation
   55,550.72 : 76,661.52 = 31,681.28 : x
2. Step 2: Convert to fraction form
   55,550.72/76,661.52 = 31,681.28/x
3. Step 3: Cross multiply
   55,550.72x = 76,661.52 × 31,681.28
4. Step 4: Simplify right side
   55,550.72x = 2,428,735,080.35
5. Step 5: Solve for x
   x = 2,428,735,080.35/55,550.72
6. Step 6: Final answer
   x = 43,721.04