Finding the Fourth Proportional to 81,108.72, 111,934.44 and 47,574.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,108.72 : 111,934.44 = 47,574.72 : x
2. Step 2: Convert to fraction form
   81,108.72/111,934.44 = 47,574.72/x
3. Step 3: Cross multiply
   81,108.72x = 111,934.44 × 47,574.72
4. Step 4: Simplify right side
   81,108.72x = 5,325,249,641.36
5. Step 5: Solve for x
   x = 5,325,249,641.36/81,108.72
6. Step 6: Final answer
   x = 65,655.70