Finding the Fourth Proportional to 64,744.78, 89,398.47 and 50,637.82

Step by Step Solution

1. Step 1: Write the proportion equation
   64,744.78 : 89,398.47 = 50,637.82 : x
2. Step 2: Convert to fraction form
   64,744.78/89,398.47 = 50,637.82/x
3. Step 3: Cross multiply
   64,744.78x = 89,398.47 × 50,637.82
4. Step 4: Simplify right side
   64,744.78x = 4,526,943,632.14
5. Step 5: Solve for x
   x = 4,526,943,632.14/64,744.78
6. Step 6: Final answer
   x = 69,919.82