Finding the Fourth Proportional to 78,388.37, 117,583.58 and 30,983.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,388.37 : 117,583.58 = 30,983.09 : x
2. Step 2: Convert to fraction form
   78,388.37/117,583.58 = 30,983.09/x
3. Step 3: Cross multiply
   78,388.37x = 117,583.58 × 30,983.09
4. Step 4: Simplify right side
   78,388.37x = 3,643,101,898.83
5. Step 5: Solve for x
   x = 3,643,101,898.83/78,388.37
6. Step 6: Final answer
   x = 46,475.03