Finding the Fourth Proportional to 89,739, 123,842.38 and 49,997.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,739 : 123,842.38 = 49,997.56 : x
2. Step 2: Convert to fraction form
   89,739/123,842.38 = 49,997.56/x
3. Step 3: Cross multiply
   89,739x = 123,842.38 × 49,997.56
4. Step 4: Simplify right side
   89,739x = 6,191,816,824.59
5. Step 5: Solve for x
   x = 6,191,816,824.59/89,739
6. Step 6: Final answer
   x = 68,998.06