Finding the Fourth Proportional to 64,401.69, 88,771.64 and 50,767.49

Step by Step Solution

1. Step 1: Write the proportion equation
   64,401.69 : 88,771.64 = 50,767.49 : x
2. Step 2: Convert to fraction form
   64,401.69/88,771.64 = 50,767.49/x
3. Step 3: Cross multiply
   64,401.69x = 88,771.64 × 50,767.49
4. Step 4: Simplify right side
   64,401.69x = 4,506,713,345.98
5. Step 5: Solve for x
   x = 4,506,713,345.98/64,401.69
6. Step 6: Final answer
   x = 69,978.18