Finding the Fourth Proportional to 80,865, 111,594.78 and 46,875.92

Step by Step Solution

1. Step 1: Write the proportion equation
   80,865 : 111,594.78 = 46,875.92 : x
2. Step 2: Convert to fraction form
   80,865/111,594.78 = 46,875.92/x
3. Step 3: Cross multiply
   80,865x = 111,594.78 × 46,875.92
4. Step 4: Simplify right side
   80,865x = 5,231,107,421.72
5. Step 5: Solve for x
   x = 5,231,107,421.72/80,865
6. Step 6: Final answer
   x = 64,689.39