Finding the Fourth Proportional to 78,880.16, 117,636.04 and 67,268

Step by Step Solution

1. Step 1: Write the proportion equation
   78,880.16 : 117,636.04 = 67,268 : x
2. Step 2: Convert to fraction form
   78,880.16/117,636.04 = 67,268/x
3. Step 3: Cross multiply
   78,880.16x = 117,636.04 × 67,268
4. Step 4: Simplify right side
   78,880.16x = 7,913,141,138.72
5. Step 5: Solve for x
   x = 7,913,141,138.72/78,880.16
6. Step 6: Final answer
   x = 100,318.52