Finding the Fourth Proportional to 166,617, 229,931.46 and 91,165.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,617 : 229,931.46 = 91,165.50 : x
2. Step 2: Convert to fraction form
   166,617/229,931.46 = 91,165.50/x
3. Step 3: Cross multiply
   166,617x = 229,931.46 × 91,165.50
4. Step 4: Simplify right side
   166,617x = 20,961,816,516.63
5. Step 5: Solve for x
   x = 20,961,816,516.63/166,617
6. Step 6: Final answer
   x = 125,808.39