Finding the Fourth Proportional to 86,640, 119,563.56 and 46,896

Step by Step Solution

1. Step 1: Write the proportion equation
   86,640 : 119,563.56 = 46,896 : x
2. Step 2: Convert to fraction form
   86,640/119,563.56 = 46,896/x
3. Step 3: Cross multiply
   86,640x = 119,563.56 × 46,896
4. Step 4: Simplify right side
   86,640x = 5,607,052,709.76
5. Step 5: Solve for x
   x = 5,607,052,709.76/86,640
6. Step 6: Final answer
   x = 64,716.67