Finding the Fourth Proportional to 158,288.72, 218,443.93 and 86,669.24

Step by Step Solution

1. Step 1: Write the proportion equation
   158,288.72 : 218,443.93 = 86,669.24 : x
2. Step 2: Convert to fraction form
   158,288.72/218,443.93 = 86,669.24/x
3. Step 3: Cross multiply
   158,288.72x = 218,443.93 × 86,669.24
4. Step 4: Simplify right side
   158,288.72x = 18,932,368,086.82
5. Step 5: Solve for x
   x = 18,932,368,086.82/158,288.72
6. Step 6: Final answer
   x = 119,606.55