Finding the Fourth Proportional to 72,300.96, 108,456.30 and 19,706.04

Step by Step Solution

1. Step 1: Write the proportion equation
   72,300.96 : 108,456.30 = 19,706.04 : x
2. Step 2: Convert to fraction form
   72,300.96/108,456.30 = 19,706.04/x
3. Step 3: Cross multiply
   72,300.96x = 108,456.30 × 19,706.04
4. Step 4: Simplify right side
   72,300.96x = 2,137,244,186.05
5. Step 5: Solve for x
   x = 2,137,244,186.05/72,300.96
6. Step 6: Final answer
   x = 29,560.38