Finding the Fourth Proportional to 42,387.39, 58,462.29 and 31,052.79

Step by Step Solution

1. Step 1: Write the proportion equation
   42,387.39 : 58,462.29 = 31,052.79 : x
2. Step 2: Convert to fraction form
   42,387.39/58,462.29 = 31,052.79/x
3. Step 3: Cross multiply
   42,387.39x = 58,462.29 × 31,052.79
4. Step 4: Simplify right side
   42,387.39x = 1,815,417,214.29
5. Step 5: Solve for x
   x = 1,815,417,214.29/42,387.39
6. Step 6: Final answer
   x = 42,829.18