Finding the Fourth Proportional to 42,394.43, 58,115.28 and 42,002.39

Step by Step Solution

1. Step 1: Write the proportion equation
   42,394.43 : 58,115.28 = 42,002.39 : x
2. Step 2: Convert to fraction form
   42,394.43/58,115.28 = 42,002.39/x
3. Step 3: Cross multiply
   42,394.43x = 58,115.28 × 42,002.39
4. Step 4: Simplify right side
   42,394.43x = 2,440,980,364.94
5. Step 5: Solve for x
   x = 2,440,980,364.94/42,394.43
6. Step 6: Final answer
   x = 57,577.86