Finding the Fourth Proportional to 78,058.88, 117,040.86 and 30,617.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,058.88 : 117,040.86 = 30,617.12 : x
2. Step 2: Convert to fraction form
   78,058.88/117,040.86 = 30,617.12/x
3. Step 3: Cross multiply
   78,058.88x = 117,040.86 × 30,617.12
4. Step 4: Simplify right side
   78,058.88x = 3,583,454,055.52
5. Step 5: Solve for x
   x = 3,583,454,055.52/78,058.88
6. Step 6: Final answer
   x = 45,907.06