Finding the Fourth Proportional to 86,940.54, 130,443.62 and 30,778.38

Step by Step Solution

1. Step 1: Write the proportion equation
   86,940.54 : 130,443.62 = 30,778.38 : x
2. Step 2: Convert to fraction form
   86,940.54/130,443.62 = 30,778.38/x
3. Step 3: Cross multiply
   86,940.54x = 130,443.62 × 30,778.38
4. Step 4: Simplify right side
   86,940.54x = 4,014,843,151.04
5. Step 5: Solve for x
   x = 4,014,843,151.04/86,940.54
6. Step 6: Final answer
   x = 46,179.18