Finding the Fourth Proportional to 80,968.50, 111,746.28 and 47,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,968.50 : 111,746.28 = 47,434.50 : x
2. Step 2: Convert to fraction form
   80,968.50/111,746.28 = 47,434.50/x
3. Step 3: Cross multiply
   80,968.50x = 111,746.28 × 47,434.50
4. Step 4: Simplify right side
   80,968.50x = 5,300,628,918.66
5. Step 5: Solve for x
   x = 5,300,628,918.66/80,968.50
6. Step 6: Final answer
   x = 65,465.32