Finding the Fourth Proportional to 166,619, 229,934.22 and 91,167.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,619 : 229,934.22 = 91,167.50 : x
2. Step 2: Convert to fraction form
   166,619/229,934.22 = 91,167.50/x
3. Step 3: Cross multiply
   166,619x = 229,934.22 × 91,167.50
4. Step 4: Simplify right side
   166,619x = 20,962,528,001.85
5. Step 5: Solve for x
   x = 20,962,528,001.85/166,619
6. Step 6: Final answer
   x = 125,811.15