Finding the Fourth Proportional to 78,456, 108,118.08 and 50,112.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,456 : 108,118.08 = 50,112.48 : x
2. Step 2: Convert to fraction form
   78,456/108,118.08 = 50,112.48/x
3. Step 3: Cross multiply
   78,456x = 108,118.08 × 50,112.48
4. Step 4: Simplify right side
   78,456x = 5,418,065,121.64
5. Step 5: Solve for x
   x = 5,418,065,121.64/78,456
6. Step 6: Final answer
   x = 69,058.65