Finding the Fourth Proportional to 72,859.83, 109,289.94 and 20,269.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,859.83 : 109,289.94 = 20,269.32 : x
2. Step 2: Convert to fraction form
   72,859.83/109,289.94 = 20,269.32/x
3. Step 3: Cross multiply
   72,859.83x = 109,289.94 × 20,269.32
4. Step 4: Simplify right side
   72,859.83x = 2,215,232,766.64
5. Step 5: Solve for x
   x = 2,215,232,766.64/72,859.83
6. Step 6: Final answer
   x = 30,404.03