Finding the Fourth Proportional to 158,021.69, 218,076.71 and 86,397.44

Step by Step Solution

1. Step 1: Write the proportion equation
   158,021.69 : 218,076.71 = 86,397.44 : x
2. Step 2: Convert to fraction form
   158,021.69/218,076.71 = 86,397.44/x
3. Step 3: Cross multiply
   158,021.69x = 218,076.71 × 86,397.44
4. Step 4: Simplify right side
   158,021.69x = 18,841,267,945.25
5. Step 5: Solve for x
   x = 18,841,267,945.25/158,021.69
6. Step 6: Final answer
   x = 119,232.17