Finding the Fourth Proportional to 158,494.10, 218,727.27 and 86,874.10

Step by Step Solution

1. Step 1: Write the proportion equation
   158,494.10 : 218,727.27 = 86,874.10 : x
2. Step 2: Convert to fraction form
   158,494.10/218,727.27 = 86,874.10/x
3. Step 3: Cross multiply
   158,494.10x = 218,727.27 × 86,874.10
4. Step 4: Simplify right side
   158,494.10x = 19,001,734,179.89
5. Step 5: Solve for x
   x = 19,001,734,179.89/158,494.10
6. Step 6: Final answer
   x = 119,889.22