Finding the Fourth Proportional to 72,429.90, 108,628.24 and 19,843.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,429.90 : 108,628.24 = 19,843.48 : x
2. Step 2: Convert to fraction form
   72,429.90/108,628.24 = 19,843.48/x
3. Step 3: Cross multiply
   72,429.90x = 108,628.24 × 19,843.48
4. Step 4: Simplify right side
   72,429.90x = 2,155,562,431.26
5. Step 5: Solve for x
   x = 2,155,562,431.26/72,429.90
6. Step 6: Final answer
   x = 29,760.67