Finding the Fourth Proportional to 83,144.88, 124,745.94 and 45,657

Step by Step Solution

1. Step 1: Write the proportion equation
   83,144.88 : 124,745.94 = 45,657 : x
2. Step 2: Convert to fraction form
   83,144.88/124,745.94 = 45,657/x
3. Step 3: Cross multiply
   83,144.88x = 124,745.94 × 45,657
4. Step 4: Simplify right side
   83,144.88x = 5,695,525,382.58
5. Step 5: Solve for x
   x = 5,695,525,382.58/83,144.88
6. Step 6: Final answer
   x = 68,501.22