Finding the Fourth Proportional to 166,591, 229,895.64 and 91,141.12

Step by Step Solution

1. Step 1: Write the proportion equation
   166,591 : 229,895.64 = 91,141.12 : x
2. Step 2: Convert to fraction form
   166,591/229,895.64 = 91,141.12/x
3. Step 3: Cross multiply
   166,591x = 229,895.64 × 91,141.12
4. Step 4: Simplify right side
   166,591x = 20,952,946,112.72
5. Step 5: Solve for x
   x = 20,952,946,112.72/166,591
6. Step 6: Final answer
   x = 125,774.78