Finding the Fourth Proportional to 125,022.88, 187,404.72 and 78,168.16

Step by Step Solution

1. Step 1: Write the proportion equation
   125,022.88 : 187,404.72 = 78,168.16 : x
2. Step 2: Convert to fraction form
   125,022.88/187,404.72 = 78,168.16/x
3. Step 3: Cross multiply
   125,022.88x = 187,404.72 × 78,168.16
4. Step 4: Simplify right side
   125,022.88x = 14,649,082,137.72
5. Step 5: Solve for x
   x = 14,649,082,137.72/125,022.88
6. Step 6: Final answer
   x = 117,171.21