Finding the Fourth Proportional to 64,871.42, 89,563.42 and 49,736.02

Step by Step Solution

1. Step 1: Write the proportion equation
   64,871.42 : 89,563.42 = 49,736.02 : x
2. Step 2: Convert to fraction form
   64,871.42/89,563.42 = 49,736.02/x
3. Step 3: Cross multiply
   64,871.42x = 89,563.42 × 49,736.02
4. Step 4: Simplify right side
   64,871.42x = 4,454,528,048.39
5. Step 5: Solve for x
   x = 4,454,528,048.39/64,871.42
6. Step 6: Final answer
   x = 68,667.03