Finding the Fourth Proportional to 81,699.67, 112,745.61 and 45,889.71

Step by Step Solution

1. Step 1: Write the proportion equation
   81,699.67 : 112,745.61 = 45,889.71 : x
2. Step 2: Convert to fraction form
   81,699.67/112,745.61 = 45,889.71/x
3. Step 3: Cross multiply
   81,699.67x = 112,745.61 × 45,889.71
4. Step 4: Simplify right side
   81,699.67x = 5,173,863,730.16
5. Step 5: Solve for x
   x = 5,173,863,730.16/81,699.67
6. Step 6: Final answer
   x = 63,327.84