Finding the Fourth Proportional to 78,118.28, 117,177.59 and 28,233.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,118.28 : 117,177.59 = 28,233.60 : x
2. Step 2: Convert to fraction form
   78,118.28/117,177.59 = 28,233.60/x
3. Step 3: Cross multiply
   78,118.28x = 117,177.59 × 28,233.60
4. Step 4: Simplify right side
   78,118.28x = 3,308,345,205.02
5. Step 5: Solve for x
   x = 3,308,345,205.02/78,118.28
6. Step 6: Final answer
   x = 42,350.46