Finding the Fourth Proportional to 42,154.52, 58,439.60 and 39,907.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,154.52 : 58,439.60 = 39,907.34 : x
2. Step 2: Convert to fraction form
   42,154.52/58,439.60 = 39,907.34/x
3. Step 3: Cross multiply
   42,154.52x = 58,439.60 × 39,907.34
4. Step 4: Simplify right side
   42,154.52x = 2,332,168,986.66
5. Step 5: Solve for x
   x = 2,332,168,986.66/42,154.52
6. Step 6: Final answer
   x = 55,324.29