Finding the Fourth Proportional to 78,200.52, 116,728.49 and 67,178.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,200.52 : 116,728.49 = 67,178.04 : x
2. Step 2: Convert to fraction form
   78,200.52/116,728.49 = 67,178.04/x
3. Step 3: Cross multiply
   78,200.52x = 116,728.49 × 67,178.04
4. Step 4: Simplify right side
   78,200.52x = 7,841,591,338.30
5. Step 5: Solve for x
   x = 7,841,591,338.30/78,200.52
6. Step 6: Final answer
   x = 100,275.44