Finding the Fourth Proportional to 166,572.72, 229,870.08 and 91,121.22

Step by Step Solution

1. Step 1: Write the proportion equation
   166,572.72 : 229,870.08 = 91,121.22 : x
2. Step 2: Convert to fraction form
   166,572.72/229,870.08 = 91,121.22/x
3. Step 3: Cross multiply
   166,572.72x = 229,870.08 × 91,121.22
4. Step 4: Simplify right side
   166,572.72x = 20,946,042,131.10
5. Step 5: Solve for x
   x = 20,946,042,131.10/166,572.72
6. Step 6: Final answer
   x = 125,747.13