Finding the Fourth Proportional to 43,701.30, 65,568.15 and 42,081.30

Step by Step Solution

1. Step 1: Write the proportion equation
   43,701.30 : 65,568.15 = 42,081.30 : x
2. Step 2: Convert to fraction form
   43,701.30/65,568.15 = 42,081.30/x
3. Step 3: Cross multiply
   43,701.30x = 65,568.15 × 42,081.30
4. Step 4: Simplify right side
   43,701.30x = 2,759,192,990.60
5. Step 5: Solve for x
   x = 2,759,192,990.60/43,701.30
6. Step 6: Final answer
   x = 63,137.55