Finding the Fourth Proportional to 78,496.80, 108,287.50 and 46,643.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,496.80 : 108,287.50 = 46,643.15 : x
2. Step 2: Convert to fraction form
   78,496.80/108,287.50 = 46,643.15/x
3. Step 3: Cross multiply
   78,496.80x = 108,287.50 × 46,643.15
4. Step 4: Simplify right side
   78,496.80x = 5,050,869,330.97
5. Step 5: Solve for x
   x = 5,050,869,330.97/78,496.80
6. Step 6: Final answer
   x = 64,344.91