Finding the Fourth Proportional to 55,606.64, 76,721.88 and 31,724.72

Step by Step Solution

1. Step 1: Write the proportion equation
   55,606.64 : 76,721.88 = 31,724.72 : x
2. Step 2: Convert to fraction form
   55,606.64/76,721.88 = 31,724.72/x
3. Step 3: Cross multiply
   55,606.64x = 76,721.88 × 31,724.72
4. Step 4: Simplify right side
   55,606.64x = 2,433,980,160.87
5. Step 5: Solve for x
   x = 2,433,980,160.87/55,606.64
6. Step 6: Final answer
   x = 43,771.39