Finding the Fourth Proportional to 83,111.40, 124,745.40 and 43,696.80

Step by Step Solution

1. Step 1: Write the proportion equation
   83,111.40 : 124,745.40 = 43,696.80 : x
2. Step 2: Convert to fraction form
   83,111.40/124,745.40 = 43,696.80/x
3. Step 3: Cross multiply
   83,111.40x = 124,745.40 × 43,696.80
4. Step 4: Simplify right side
   83,111.40x = 5,450,974,794.72
5. Step 5: Solve for x
   x = 5,450,974,794.72/83,111.40
6. Step 6: Final answer
   x = 65,586.37