Finding the Fourth Proportional to 89,425, 123,406.50 and 49,681

Step by Step Solution

1. Step 1: Write the proportion equation
   89,425 : 123,406.50 = 49,681 : x
2. Step 2: Convert to fraction form
   89,425/123,406.50 = 49,681/x
3. Step 3: Cross multiply
   89,425x = 123,406.50 × 49,681
4. Step 4: Simplify right side
   89,425x = 6,130,958,326.50
5. Step 5: Solve for x
   x = 6,130,958,326.50/89,425
6. Step 6: Final answer
   x = 68,559.78