Finding the Fourth Proportional to 72,829, 109,249.43 and 20,238.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72,829 : 109,249.43 = 20,238.49 : x
2. Step 2: Convert to fraction form
   72,829/109,249.43 = 20,238.49/x
3. Step 3: Cross multiply
   72,829x = 109,249.43 × 20,238.49
4. Step 4: Simplify right side
   72,829x = 2,211,043,496.56
5. Step 5: Solve for x
   x = 2,211,043,496.56/72,829
6. Step 6: Final answer
   x = 30,359.38