Finding the Fourth Proportional to 78,118.65, 117,178.15 and 28,233.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,118.65 : 117,178.15 = 28,233.97 : x
2. Step 2: Convert to fraction form
   78,118.65/117,178.15 = 28,233.97/x
3. Step 3: Cross multiply
   78,118.65x = 117,178.15 × 28,233.97
4. Step 4: Simplify right side
   78,118.65x = 3,308,404,371.76
5. Step 5: Solve for x
   x = 3,308,404,371.76/78,118.65
6. Step 6: Final answer
   x = 42,351.02