Finding the Fourth Proportional to 158,638.27, 218,920.22 and 98,196.88

Step by Step Solution

1. Step 1: Write the proportion equation
   158,638.27 : 218,920.22 = 98,196.88 : x
2. Step 2: Convert to fraction form
   158,638.27/218,920.22 = 98,196.88/x
3. Step 3: Cross multiply
   158,638.27x = 218,920.22 × 98,196.88
4. Step 4: Simplify right side
   158,638.27x = 21,497,281,478.31
5. Step 5: Solve for x
   x = 21,497,281,478.31/158,638.27
6. Step 6: Final answer
   x = 135,511.32