Finding the Fourth Proportional to 72,269.72, 108,411.06 and 19,679.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,269.72 : 108,411.06 = 19,679.48 : x
2. Step 2: Convert to fraction form
   72,269.72/108,411.06 = 19,679.48/x
3. Step 3: Cross multiply
   72,269.72x = 108,411.06 × 19,679.48
4. Step 4: Simplify right side
   72,269.72x = 2,133,473,287.05
5. Step 5: Solve for x
   x = 2,133,473,287.05/72,269.72
6. Step 6: Final answer
   x = 29,520.98