Finding the Fourth Proportional to 81,723.49, 112,789.79 and 45,916.27

Step by Step Solution

1. Step 1: Write the proportion equation
   81,723.49 : 112,789.79 = 45,916.27 : x
2. Step 2: Convert to fraction form
   81,723.49/112,789.79 = 45,916.27/x
3. Step 3: Cross multiply
   81,723.49x = 112,789.79 × 45,916.27
4. Step 4: Simplify right side
   81,723.49x = 5,178,886,221.30
5. Step 5: Solve for x
   x = 5,178,886,221.30/81,723.49
6. Step 6: Final answer
   x = 63,370.84