Finding the Fourth Proportional to 166,498.88, 229,769.20 and 91,047.28

Step by Step Solution

1. Step 1: Write the proportion equation
   166,498.88 : 229,769.20 = 91,047.28 : x
2. Step 2: Convert to fraction form
   166,498.88/229,769.20 = 91,047.28/x
3. Step 3: Cross multiply
   166,498.88x = 229,769.20 × 91,047.28
4. Step 4: Simplify right side
   166,498.88x = 20,919,860,687.78
5. Step 5: Solve for x
   x = 20,919,860,687.78/166,498.88
6. Step 6: Final answer
   x = 125,645.65