Finding the Fourth Proportional to 166,591, 229,900.98 and 91,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,591 : 229,900.98 = 91,139.50 : x
2. Step 2: Convert to fraction form
   166,591/229,900.98 = 91,139.50/x
3. Step 3: Cross multiply
   166,591x = 229,900.98 × 91,139.50
4. Step 4: Simplify right side
   166,591x = 20,953,060,366.71
5. Step 5: Solve for x
   x = 20,953,060,366.71/166,591
6. Step 6: Final answer
   x = 125,775.46