Finding the Fourth Proportional to 166,100.99, 229,216.16 and 90,650.03

Step by Step Solution

1. Step 1: Write the proportion equation
   166,100.99 : 229,216.16 = 90,650.03 : x
2. Step 2: Convert to fraction form
   166,100.99/229,216.16 = 90,650.03/x
3. Step 3: Cross multiply
   166,100.99x = 229,216.16 × 90,650.03
4. Step 4: Simplify right side
   166,100.99x = 20,778,450,861.03
5. Step 5: Solve for x
   x = 20,778,450,861.03/166,100.99
6. Step 6: Final answer
   x = 125,095.29