Finding the Fourth Proportional to 166,600.71, 229,914.72 and 91,149.21

Step by Step Solution

1. Step 1: Write the proportion equation
   166,600.71 : 229,914.72 = 91,149.21 : x
2. Step 2: Convert to fraction form
   166,600.71/229,914.72 = 91,149.21/x
3. Step 3: Cross multiply
   166,600.71x = 229,914.72 × 91,149.21
4. Step 4: Simplify right side
   166,600.71x = 20,956,545,095.37
5. Step 5: Solve for x
   x = 20,956,545,095.37/166,600.71
6. Step 6: Final answer
   x = 125,789.05