Finding the Fourth Proportional to 89,439.53, 123,420.57 and 49,152.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89,439.53 : 123,420.57 = 49,152.42 : x
2. Step 2: Convert to fraction form
   89,439.53/123,420.57 = 49,152.42/x
3. Step 3: Cross multiply
   89,439.53x = 123,420.57 × 49,152.42
4. Step 4: Simplify right side
   89,439.53x = 6,066,419,508.96
5. Step 5: Solve for x
   x = 6,066,419,508.96/89,439.53
6. Step 6: Final answer
   x = 67,827.05