Finding the Fourth Proportional to 123,797.15, 170,665.52 and 87,974.09

Step by Step Solution

1. Step 1: Write the proportion equation
   123,797.15 : 170,665.52 = 87,974.09 : x
2. Step 2: Convert to fraction form
   123,797.15/170,665.52 = 87,974.09/x
3. Step 3: Cross multiply
   123,797.15x = 170,665.52 × 87,974.09
4. Step 4: Simplify right side
   123,797.15x = 15,014,142,523.18
5. Step 5: Solve for x
   x = 15,014,142,523.18/123,797.15
6. Step 6: Final answer
   x = 121,280.20