Finding the Fourth Proportional to 72,395.98, 108,581.82 and 19,796.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,395.98 : 108,581.82 = 19,796.20 : x
2. Step 2: Convert to fraction form
   72,395.98/108,581.82 = 19,796.20/x
3. Step 3: Cross multiply
   72,395.98x = 108,581.82 × 19,796.20
4. Step 4: Simplify right side
   72,395.98x = 2,149,507,425.08
5. Step 5: Solve for x
   x = 2,149,507,425.08/72,395.98
6. Step 6: Final answer
   x = 29,690.98