Finding the Fourth Proportional to 113,990.78, 170,986.17 and 30,884.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,990.78 : 170,986.17 = 30,884.78 : x
2. Step 2: Convert to fraction form
   113,990.78/170,986.17 = 30,884.78/x
3. Step 3: Cross multiply
   113,990.78x = 170,986.17 × 30,884.78
4. Step 4: Simplify right side
   113,990.78x = 5,280,870,243.49
5. Step 5: Solve for x
   x = 5,280,870,243.49/113,990.78
6. Step 6: Final answer
   x = 46,327.17