Finding the Fourth Proportional to 64,488.84, 89,028 and 50,116.56

Step by Step Solution

1. Step 1: Write the proportion equation
   64,488.84 : 89,028 = 50,116.56 : x
2. Step 2: Convert to fraction form
   64,488.84/89,028 = 50,116.56/x
3. Step 3: Cross multiply
   64,488.84x = 89,028 × 50,116.56
4. Step 4: Simplify right side
   64,488.84x = 4,461,777,103.68
5. Step 5: Solve for x
   x = 4,461,777,103.68/64,488.84
6. Step 6: Final answer
   x = 69,186.81