Finding the Fourth Proportional to 55,549.38, 76,578.42 and 39,606.15

Step by Step Solution

1. Step 1: Write the proportion equation
   55,549.38 : 76,578.42 = 39,606.15 : x
2. Step 2: Convert to fraction form
   55,549.38/76,578.42 = 39,606.15/x
3. Step 3: Cross multiply
   55,549.38x = 76,578.42 × 39,606.15
4. Step 4: Simplify right side
   55,549.38x = 3,032,976,389.28
5. Step 5: Solve for x
   x = 3,032,976,389.28/55,549.38
6. Step 6: Final answer
   x = 54,599.64