Finding the Fourth Proportional to 72,238.15, 108,362.67 and 19,648.09

Step by Step Solution

1. Step 1: Write the proportion equation
   72,238.15 : 108,362.67 = 19,648.09 : x
2. Step 2: Convert to fraction form
   72,238.15/108,362.67 = 19,648.09/x
3. Step 3: Cross multiply
   72,238.15x = 108,362.67 × 19,648.09
4. Step 4: Simplify right side
   72,238.15x = 2,129,119,492.80
5. Step 5: Solve for x
   x = 2,129,119,492.80/72,238.15
6. Step 6: Final answer
   x = 29,473.62