Finding the Fourth Proportional to 87,045.53, 119,340.53 and 85,470.89

Step by Step Solution

1. Step 1: Write the proportion equation
   87,045.53 : 119,340.53 = 85,470.89 : x
2. Step 2: Convert to fraction form
   87,045.53/119,340.53 = 85,470.89/x
3. Step 3: Cross multiply
   87,045.53x = 119,340.53 × 85,470.89
4. Step 4: Simplify right side
   87,045.53x = 10,200,140,288.11
5. Step 5: Solve for x
   x = 10,200,140,288.11/87,045.53
6. Step 6: Final answer
   x = 117,181.67