Finding the Fourth Proportional to 89,408.62, 123,384.05 and 49,122.03

Step by Step Solution

1. Step 1: Write the proportion equation
   89,408.62 : 123,384.05 = 49,122.03 : x
2. Step 2: Convert to fraction form
   89,408.62/123,384.05 = 49,122.03/x
3. Step 3: Cross multiply
   89,408.62x = 123,384.05 × 49,122.03
4. Step 4: Simplify right side
   89,408.62x = 6,060,875,005.62
5. Step 5: Solve for x
   x = 6,060,875,005.62/89,408.62
6. Step 6: Final answer
   x = 67,788.49