Finding the Fourth Proportional to 89,705.63, 123,799.43 and 49,419.47

Step by Step Solution

1. Step 1: Write the proportion equation
   89,705.63 : 123,799.43 = 49,419.47 : x
2. Step 2: Convert to fraction form
   89,705.63/123,799.43 = 49,419.47/x
3. Step 3: Cross multiply
   89,705.63x = 123,799.43 × 49,419.47
4. Step 4: Simplify right side
   89,705.63x = 6,118,101,721.45
5. Step 5: Solve for x
   x = 6,118,101,721.45/89,705.63
6. Step 6: Final answer
   x = 68,201.99