Finding the Fourth Proportional to 90,139.33, 124,381.33 and 49,847.61

Step by Step Solution

1. Step 1: Write the proportion equation
   90,139.33 : 124,381.33 = 49,847.61 : x
2. Step 2: Convert to fraction form
   90,139.33/124,381.33 = 49,847.61/x
3. Step 3: Cross multiply
   90,139.33x = 124,381.33 × 49,847.61
4. Step 4: Simplify right side
   90,139.33x = 6,200,112,029.12
5. Step 5: Solve for x
   x = 6,200,112,029.12/90,139.33
6. Step 6: Final answer
   x = 68,783.65