Finding the Fourth Proportional to 158,647.50, 218,942.28 and 91,601.10

Step by Step Solution

1. Step 1: Write the proportion equation
   158,647.50 : 218,942.28 = 91,601.10 : x
2. Step 2: Convert to fraction form
   158,647.50/218,942.28 = 91,601.10/x
3. Step 3: Cross multiply
   158,647.50x = 218,942.28 × 91,601.10
4. Step 4: Simplify right side
   158,647.50x = 20,055,353,684.51
5. Step 5: Solve for x
   x = 20,055,353,684.51/158,647.50
6. Step 6: Final answer
   x = 126,414.56