Finding the Fourth Proportional to 119,171.31, 178,590.90 and 89,554.56

Step by Step Solution

1. Step 1: Write the proportion equation
   119,171.31 : 178,590.90 = 89,554.56 : x
2. Step 2: Convert to fraction form
   119,171.31/178,590.90 = 89,554.56/x
3. Step 3: Cross multiply
   119,171.31x = 178,590.90 × 89,554.56
4. Step 4: Simplify right side
   119,171.31x = 15,993,629,469.50
5. Step 5: Solve for x
   x = 15,993,629,469.50/119,171.31
6. Step 6: Final answer
   x = 134,207.05