Finding the Fourth Proportional to 166,626, 229,943.88 and 91,174.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,626 : 229,943.88 = 91,174.50 : x
2. Step 2: Convert to fraction form
   166,626/229,943.88 = 91,174.50/x
3. Step 3: Cross multiply
   166,626x = 229,943.88 × 91,174.50
4. Step 4: Simplify right side
   166,626x = 20,965,018,287.06
5. Step 5: Solve for x
   x = 20,965,018,287.06/166,626
6. Step 6: Final answer
   x = 125,820.81