Finding the Fourth Proportional to 42,210.54, 58,516.92 and 39,963.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,210.54 : 58,516.92 = 39,963.42 : x
2. Step 2: Convert to fraction form
   42,210.54/58,516.92 = 39,963.42/x
3. Step 3: Cross multiply
   42,210.54x = 58,516.92 × 39,963.42
4. Step 4: Simplify right side
   42,210.54x = 2,338,536,251.07
5. Step 5: Solve for x
   x = 2,338,536,251.07/42,210.54
6. Step 6: Final answer
   x = 55,401.71