Finding the Fourth Proportional to 78,019.32, 116,983.82 and 30,578.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,019.32 : 116,983.82 = 30,578.97 : x
2. Step 2: Convert to fraction form
   78,019.32/116,983.82 = 30,578.97/x
3. Step 3: Cross multiply
   78,019.32x = 116,983.82 × 30,578.97
4. Step 4: Simplify right side
   78,019.32x = 3,577,244,569.37
5. Step 5: Solve for x
   x = 3,577,244,569.37/78,019.32
6. Step 6: Final answer
   x = 45,850.75