Finding the Fourth Proportional to 72,016.25, 108,024.06 and 19,430.97

Step by Step Solution

1. Step 1: Write the proportion equation
   72,016.25 : 108,024.06 = 19,430.97 : x
2. Step 2: Convert to fraction form
   72,016.25/108,024.06 = 19,430.97/x
3. Step 3: Cross multiply
   72,016.25x = 108,024.06 × 19,430.97
4. Step 4: Simplify right side
   72,016.25x = 2,099,012,171.98
5. Step 5: Solve for x
   x = 2,099,012,171.98/72,016.25
6. Step 6: Final answer
   x = 29,146.37