Finding the Fourth Proportional to 72,200.48, 108,300.34 and 19,609.97

Step by Step Solution

1. Step 1: Write the proportion equation
   72,200.48 : 108,300.34 = 19,609.97 : x
2. Step 2: Convert to fraction form
   72,200.48/108,300.34 = 19,609.97/x
3. Step 3: Cross multiply
   72,200.48x = 108,300.34 × 19,609.97
4. Step 4: Simplify right side
   72,200.48x = 2,123,765,901.40
5. Step 5: Solve for x
   x = 2,123,765,901.40/72,200.48
6. Step 6: Final answer
   x = 29,414.84