Finding the Fourth Proportional to 90,143.34, 124,395.50 and 49,856.10

Step by Step Solution

1. Step 1: Write the proportion equation
   90,143.34 : 124,395.50 = 49,856.10 : x
2. Step 2: Convert to fraction form
   90,143.34/124,395.50 = 49,856.10/x
3. Step 3: Cross multiply
   90,143.34x = 124,395.50 × 49,856.10
4. Step 4: Simplify right side
   90,143.34x = 6,201,874,487.55
5. Step 5: Solve for x
   x = 6,201,874,487.55/90,143.34
6. Step 6: Final answer
   x = 68,800.14