Finding the Fourth Proportional to 158,272.06, 218,406.83 and 86,638.24

Step by Step Solution

1. Step 1: Write the proportion equation
   158,272.06 : 218,406.83 = 86,638.24 : x
2. Step 2: Convert to fraction form
   158,272.06/218,406.83 = 86,638.24/x
3. Step 3: Cross multiply
   158,272.06x = 218,406.83 × 86,638.24
4. Step 4: Simplify right side
   158,272.06x = 18,922,383,682.34
5. Step 5: Solve for x
   x = 18,922,383,682.34/158,272.06
6. Step 6: Final answer
   x = 119,556.06