Finding the Fourth Proportional to 158,613.39, 218,885.90 and 98,172

Step by Step Solution

1. Step 1: Write the proportion equation
   158,613.39 : 218,885.90 = 98,172 : x
2. Step 2: Convert to fraction form
   158,613.39/218,885.90 = 98,172/x
3. Step 3: Cross multiply
   158,613.39x = 218,885.90 × 98,172
4. Step 4: Simplify right side
   158,613.39x = 21,488,466,083.94
5. Step 5: Solve for x
   x = 21,488,466,083.94/158,613.39
6. Step 6: Final answer
   x = 135,477.00