Finding the Fourth Proportional to 143,922.18, 198,667.32 and 108,215.88

Step by Step Solution

1. Step 1: Write the proportion equation
   143,922.18 : 198,667.32 = 108,215.88 : x
2. Step 2: Convert to fraction form
   143,922.18/198,667.32 = 108,215.88/x
3. Step 3: Cross multiply
   143,922.18x = 198,667.32 × 108,215.88
4. Step 4: Simplify right side
   143,922.18x = 21,498,958,861.04
5. Step 5: Solve for x
   x = 21,498,958,861.04/143,922.18
6. Step 6: Final answer
   x = 149,379.05