Finding the Fourth Proportional to 89,721.88, 123,817.61 and 49,435.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,721.88 : 123,817.61 = 49,435.25 : x
2. Step 2: Convert to fraction form
   89,721.88/123,817.61 = 49,435.25/x
3. Step 3: Cross multiply
   89,721.88x = 123,817.61 × 49,435.25
4. Step 4: Simplify right side
   89,721.88x = 6,120,954,009.25
5. Step 5: Solve for x
   x = 6,120,954,009.25/89,721.88
6. Step 6: Final answer
   x = 68,221.42