Finding the Fourth Proportional to 43,443.86, 59,921.60 and 39,870.36

Step by Step Solution

1. Step 1: Write the proportion equation
   43,443.86 : 59,921.60 = 39,870.36 : x
2. Step 2: Convert to fraction form
   43,443.86/59,921.60 = 39,870.36/x
3. Step 3: Cross multiply
   43,443.86x = 59,921.60 × 39,870.36
4. Step 4: Simplify right side
   43,443.86x = 2,389,095,763.78
5. Step 5: Solve for x
   x = 2,389,095,763.78/43,443.86
6. Step 6: Final answer
   x = 54,992.71