Finding the Fourth Proportional to 166,721.04, 230,074.56 and 91,269

Step by Step Solution

1. Step 1: Write the proportion equation
   166,721.04 : 230,074.56 = 91,269 : x
2. Step 2: Convert to fraction form
   166,721.04/230,074.56 = 91,269/x
3. Step 3: Cross multiply
   166,721.04x = 230,074.56 × 91,269
4. Step 4: Simplify right side
   166,721.04x = 20,998,675,016.64
5. Step 5: Solve for x
   x = 20,998,675,016.64/166,721.04
6. Step 6: Final answer
   x = 125,950.96