Finding the Fourth Proportional to 90,221.33, 124,503 and 49,936.79

Step by Step Solution

1. Step 1: Write the proportion equation
   90,221.33 : 124,503 = 49,936.79 : x
2. Step 2: Convert to fraction form
   90,221.33/124,503 = 49,936.79/x
3. Step 3: Cross multiply
   90,221.33x = 124,503 × 49,936.79
4. Step 4: Simplify right side
   90,221.33x = 6,217,280,165.37
5. Step 5: Solve for x
   x = 6,217,280,165.37/90,221.33
6. Step 6: Final answer
   x = 68,911.42