Finding the Fourth Proportional to 72,144.83, 108,217.24 and 19,554.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,144.83 : 108,217.24 = 19,554.31 : x
2. Step 2: Convert to fraction form
   72,144.83/108,217.24 = 19,554.31/x
3. Step 3: Cross multiply
   72,144.83x = 108,217.24 × 19,554.31
4. Step 4: Simplify right side
   72,144.83x = 2,116,113,458.30
5. Step 5: Solve for x
   x = 2,116,113,458.30/72,144.83
6. Step 6: Final answer
   x = 29,331.46