Finding the Fourth Proportional to 81,683.82, 112,718.52 and 45,872.91

Step by Step Solution

1. Step 1: Write the proportion equation
   81,683.82 : 112,718.52 = 45,872.91 : x
2. Step 2: Convert to fraction form
   81,683.82/112,718.52 = 45,872.91/x
3. Step 3: Cross multiply
   81,683.82x = 112,718.52 × 45,872.91
4. Step 4: Simplify right side
   81,683.82x = 5,170,726,523.29
5. Step 5: Solve for x
   x = 5,170,726,523.29/81,683.82
6. Step 6: Final answer
   x = 63,301.72