Finding the Fourth Proportional to 166,259, 229,438.64 and 90,807.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,259 : 229,438.64 = 90,807.50 : x
2. Step 2: Convert to fraction form
   166,259/229,438.64 = 90,807.50/x
3. Step 3: Cross multiply
   166,259x = 229,438.64 × 90,807.50
4. Step 4: Simplify right side
   166,259x = 20,834,749,301.80
5. Step 5: Solve for x
   x = 20,834,749,301.80/166,259
6. Step 6: Final answer
   x = 125,315.02