Finding the Fourth Proportional to 89,438.28, 123,422.56 and 48,600.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,438.28 : 123,422.56 = 48,600.60 : x
2. Step 2: Convert to fraction form
   89,438.28/123,422.56 = 48,600.60/x
3. Step 3: Cross multiply
   89,438.28x = 123,422.56 × 48,600.60
4. Step 4: Simplify right side
   89,438.28x = 5,998,410,469.54
5. Step 5: Solve for x
   x = 5,998,410,469.54/89,438.28
6. Step 6: Final answer
   x = 67,067.60