Finding the Fourth Proportional to 159,123.91, 219,585.31 and 87,503.31

Step by Step Solution

1. Step 1: Write the proportion equation
   159,123.91 : 219,585.31 = 87,503.31 : x
2. Step 2: Convert to fraction form
   159,123.91/219,585.31 = 87,503.31/x
3. Step 3: Cross multiply
   159,123.91x = 219,585.31 × 87,503.31
4. Step 4: Simplify right side
   159,123.91x = 19,214,441,452.38
5. Step 5: Solve for x
   x = 19,214,441,452.38/159,123.91
6. Step 6: Final answer
   x = 120,751.44