Finding the Fourth Proportional to 72,496.56, 108,744.60 and 19,906.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72,496.56 : 108,744.60 = 19,906.08 : x
2. Step 2: Convert to fraction form
   72,496.56/108,744.60 = 19,906.08/x
3. Step 3: Cross multiply
   72,496.56x = 108,744.60 × 19,906.08
4. Step 4: Simplify right side
   72,496.56x = 2,164,678,707.17
5. Step 5: Solve for x
   x = 2,164,678,707.17/72,496.56
6. Step 6: Final answer
   x = 29,859.05