Finding the Fourth Proportional to 81,456.81, 112,405.76 and 47,470.83

Step by Step Solution

1. Step 1: Write the proportion equation
   81,456.81 : 112,405.76 = 47,470.83 : x
2. Step 2: Convert to fraction form
   81,456.81/112,405.76 = 47,470.83/x
3. Step 3: Cross multiply
   81,456.81x = 112,405.76 × 47,470.83
4. Step 4: Simplify right side
   81,456.81x = 5,335,994,723.98
5. Step 5: Solve for x
   x = 5,335,994,723.98/81,456.81
6. Step 6: Final answer
   x = 65,507.04