Finding the Fourth Proportional to 72,536.72, 108,805.68 and 19,949.09

Step by Step Solution

1. Step 1: Write the proportion equation
   72,536.72 : 108,805.68 = 19,949.09 : x
2. Step 2: Convert to fraction form
   72,536.72/108,805.68 = 19,949.09/x
3. Step 3: Cross multiply
   72,536.72x = 108,805.68 × 19,949.09
4. Step 4: Simplify right side
   72,536.72x = 2,170,573,758.80
5. Step 5: Solve for x
   x = 2,170,573,758.80/72,536.72
6. Step 6: Final answer
   x = 29,923.79