Finding the Fourth Proportional to 158,836.36, 219,196.74 and 87,223

Step by Step Solution

1. Step 1: Write the proportion equation
   158,836.36 : 219,196.74 = 87,223 : x
2. Step 2: Convert to fraction form
   158,836.36/219,196.74 = 87,223/x
3. Step 3: Cross multiply
   158,836.36x = 219,196.74 × 87,223
4. Step 4: Simplify right side
   158,836.36x = 19,118,997,253.02
5. Step 5: Solve for x
   x = 19,118,997,253.02/158,836.36
6. Step 6: Final answer
   x = 120,369.15