Finding the Fourth Proportional to 158,111.36, 218,191.89 and 86,490.51

Step by Step Solution

1. Step 1: Write the proportion equation
   158,111.36 : 218,191.89 = 86,490.51 : x
2. Step 2: Convert to fraction form
   158,111.36/218,191.89 = 86,490.51/x
3. Step 3: Cross multiply
   158,111.36x = 218,191.89 × 86,490.51
4. Step 4: Simplify right side
   158,111.36x = 18,871,527,843.96
5. Step 5: Solve for x
   x = 18,871,527,843.96/158,111.36
6. Step 6: Final answer
   x = 119,355.93