Finding the Fourth Proportional to 89,287.70, 123,218.51 and 49,005.20

Step by Step Solution

1. Step 1: Write the proportion equation
   89,287.70 : 123,218.51 = 49,005.20 : x
2. Step 2: Convert to fraction form
   89,287.70/123,218.51 = 49,005.20/x
3. Step 3: Cross multiply
   89,287.70x = 123,218.51 × 49,005.20
4. Step 4: Simplify right side
   89,287.70x = 6,038,347,789.27
5. Step 5: Solve for x
   x = 6,038,347,789.27/89,287.70
6. Step 6: Final answer
   x = 67,627.99