Finding the Fourth Proportional to 89,424.17, 123,405.30 and 49,140.53

Step by Step Solution

1. Step 1: Write the proportion equation
   89,424.17 : 123,405.30 = 49,140.53 : x
2. Step 2: Convert to fraction form
   89,424.17/123,405.30 = 49,140.53/x
3. Step 3: Cross multiply
   89,424.17x = 123,405.30 × 49,140.53
4. Step 4: Simplify right side
   89,424.17x = 6,064,201,229.78
5. Step 5: Solve for x
   x = 6,064,201,229.78/89,424.17
6. Step 6: Final answer
   x = 67,813.90