Finding the Fourth Proportional to 161,100.72, 241,723.12 and 82,173.36

Step by Step Solution

1. Step 1: Write the proportion equation
   161,100.72 : 241,723.12 = 82,173.36 : x
2. Step 2: Convert to fraction form
   161,100.72/241,723.12 = 82,173.36/x
3. Step 3: Cross multiply
   161,100.72x = 241,723.12 × 82,173.36
4. Step 4: Simplify right side
   161,100.72x = 19,863,200,960.08
5. Step 5: Solve for x
   x = 19,863,200,960.08/161,100.72
6. Step 6: Final answer
   x = 123,296.79