Finding the Fourth Proportional to 166,979.97, 230,423.81 and 91,513.89

Step by Step Solution

1. Step 1: Write the proportion equation
   166,979.97 : 230,423.81 = 91,513.89 : x
2. Step 2: Convert to fraction form
   166,979.97/230,423.81 = 91,513.89/x
3. Step 3: Cross multiply
   166,979.97x = 230,423.81 × 91,513.89
4. Step 4: Simplify right side
   166,979.97x = 21,086,978,744.15
5. Step 5: Solve for x
   x = 21,086,978,744.15/166,979.97
6. Step 6: Final answer
   x = 126,284.48