Finding the Fourth Proportional to 64,807.98, 89,460.09 and 50,665.38

Step by Step Solution

1. Step 1: Write the proportion equation
   64,807.98 : 89,460.09 = 50,665.38 : x
2. Step 2: Convert to fraction form
   64,807.98/89,460.09 = 50,665.38/x
3. Step 3: Cross multiply
   64,807.98x = 89,460.09 × 50,665.38
4. Step 4: Simplify right side
   64,807.98x = 4,532,529,454.68
5. Step 5: Solve for x
   x = 4,532,529,454.68/64,807.98
6. Step 6: Final answer
   x = 69,937.83