Finding the Fourth Proportional to 72,269.22, 108,410.31 and 19,678.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,269.22 : 108,410.31 = 19,678.98 : x
2. Step 2: Convert to fraction form
   72,269.22/108,410.31 = 19,678.98/x
3. Step 3: Cross multiply
   72,269.22x = 108,410.31 × 19,678.98
4. Step 4: Simplify right side
   72,269.22x = 2,133,404,322.28
5. Step 5: Solve for x
   x = 2,133,404,322.28/72,269.22
6. Step 6: Final answer
   x = 29,520.23