Finding the Fourth Proportional to 78,685.30, 108,586.20 and 46,855.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,685.30 : 108,586.20 = 46,855.54 : x
2. Step 2: Convert to fraction form
   78,685.30/108,586.20 = 46,855.54/x
3. Step 3: Cross multiply
   78,685.30x = 108,586.20 × 46,855.54
4. Step 4: Simplify right side
   78,685.30x = 5,087,865,037.55
5. Step 5: Solve for x
   x = 5,087,865,037.55/78,685.30
6. Step 6: Final answer
   x = 64,660.93