Finding the Fourth Proportional to 139,535.18, 209,302.81 and 41,039.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,535.18 : 209,302.81 = 41,039.18 : x
2. Step 2: Convert to fraction form
   139,535.18/209,302.81 = 41,039.18/x
3. Step 3: Cross multiply
   139,535.18x = 209,302.81 × 41,039.18
4. Step 4: Simplify right side
   139,535.18x = 8,589,615,694.10
5. Step 5: Solve for x
   x = 8,589,615,694.10/139,535.18
6. Step 6: Final answer
   x = 61,558.78