Finding the Fourth Proportional to 158,582.40, 218,846.71 and 86,958.15

Step by Step Solution

1. Step 1: Write the proportion equation
   158,582.40 : 218,846.71 = 86,958.15 : x
2. Step 2: Convert to fraction form
   158,582.40/218,846.71 = 86,958.15/x
3. Step 3: Cross multiply
   158,582.40x = 218,846.71 × 86,958.15
4. Step 4: Simplify right side
   158,582.40x = 19,030,505,035.19
5. Step 5: Solve for x
   x = 19,030,505,035.19/158,582.40
6. Step 6: Final answer
   x = 120,003.89