Finding the Fourth Proportional to 166,258.50, 229,436.73 and 90,807.18

Step by Step Solution

1. Step 1: Write the proportion equation
   166,258.50 : 229,436.73 = 90,807.18 : x
2. Step 2: Convert to fraction form
   166,258.50/229,436.73 = 90,807.18/x
3. Step 3: Cross multiply
   166,258.50x = 229,436.73 × 90,807.18
4. Step 4: Simplify right side
   166,258.50x = 20,834,502,439.72
5. Step 5: Solve for x
   x = 20,834,502,439.72/166,258.50
6. Step 6: Final answer
   x = 125,313.91