Finding the Fourth Proportional to 52,969.78, 73,145.76 and 39,517.68

Step by Step Solution

1. Step 1: Write the proportion equation
   52,969.78 : 73,145.76 = 39,517.68 : x
2. Step 2: Convert to fraction form
   52,969.78/73,145.76 = 39,517.68/x
3. Step 3: Cross multiply
   52,969.78x = 73,145.76 × 39,517.68
4. Step 4: Simplify right side
   52,969.78x = 2,890,550,737.04
5. Step 5: Solve for x
   x = 2,890,550,737.04/52,969.78
6. Step 6: Final answer
   x = 54,569.81