Finding the Fourth Proportional to 166,510.39, 229,780.91 and 91,058.89

Step by Step Solution

1. Step 1: Write the proportion equation
   166,510.39 : 229,780.91 = 91,058.89 : x
2. Step 2: Convert to fraction form
   166,510.39/229,780.91 = 91,058.89/x
3. Step 3: Cross multiply
   166,510.39x = 229,780.91 × 91,058.89
4. Step 4: Simplify right side
   166,510.39x = 20,923,593,003.59
5. Step 5: Solve for x
   x = 20,923,593,003.59/166,510.39
6. Step 6: Final answer
   x = 125,659.39