Finding the Fourth Proportional to 81,009.60, 111,748.32 and 47,469.12

Step by Step Solution

1. Step 1: Write the proportion equation
   81,009.60 : 111,748.32 = 47,469.12 : x
2. Step 2: Convert to fraction form
   81,009.60/111,748.32 = 47,469.12/x
3. Step 3: Cross multiply
   81,009.60x = 111,748.32 × 47,469.12
4. Step 4: Simplify right side
   81,009.60x = 5,304,594,411.88
5. Step 5: Solve for x
   x = 5,304,594,411.88/81,009.60
6. Step 6: Final answer
   x = 65,481.06