Finding the Fourth Proportional to 90,229.50, 124,513.59 and 49,945.02

Step by Step Solution

1. Step 1: Write the proportion equation
   90,229.50 : 124,513.59 = 49,945.02 : x
2. Step 2: Convert to fraction form
   90,229.50/124,513.59 = 49,945.02/x
3. Step 3: Cross multiply
   90,229.50x = 124,513.59 × 49,945.02
4. Step 4: Simplify right side
   90,229.50x = 6,218,833,742.82
5. Step 5: Solve for x
   x = 6,218,833,742.82/90,229.50
6. Step 6: Final answer
   x = 68,922.40