Finding the Fourth Proportional to 42,401.72, 58,513.24 and 25,415.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,401.72 : 58,513.24 = 25,415.56 : x
2. Step 2: Convert to fraction form
   42,401.72/58,513.24 = 25,415.56/x
3. Step 3: Cross multiply
   42,401.72x = 58,513.24 × 25,415.56
4. Step 4: Simplify right side
   42,401.72x = 1,487,146,762.01
5. Step 5: Solve for x
   x = 1,487,146,762.01/42,401.72
6. Step 6: Final answer
   x = 35,072.79