Finding the Fourth Proportional to 72,628.40, 108,789.44 and 33,218.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,628.40 : 108,789.44 = 33,218.72 : x
2. Step 2: Convert to fraction form
   72,628.40/108,789.44 = 33,218.72/x
3. Step 3: Cross multiply
   72,628.40x = 108,789.44 × 33,218.72
4. Step 4: Simplify right side
   72,628.40x = 3,613,845,946.32
5. Step 5: Solve for x
   x = 3,613,845,946.32/72,628.40
6. Step 6: Final answer
   x = 49,758.03