Finding the Fourth Proportional to 90,139.89, 124,382.26 and 49,848.18

Step by Step Solution

1. Step 1: Write the proportion equation
   90,139.89 : 124,382.26 = 49,848.18 : x
2. Step 2: Convert to fraction form
   90,139.89/124,382.26 = 49,848.18/x
3. Step 3: Cross multiply
   90,139.89x = 124,382.26 × 49,848.18
4. Step 4: Simplify right side
   90,139.89x = 6,200,229,285.29
5. Step 5: Solve for x
   x = 6,200,229,285.29/90,139.89
6. Step 6: Final answer
   x = 68,784.52