Finding the Fourth Proportional to 42,031.15, 58,007.07 and 31,402.33

Step by Step Solution

1. Step 1: Write the proportion equation
   42,031.15 : 58,007.07 = 31,402.33 : x
2. Step 2: Convert to fraction form
   42,031.15/58,007.07 = 31,402.33/x
3. Step 3: Cross multiply
   42,031.15x = 58,007.07 × 31,402.33
4. Step 4: Simplify right side
   42,031.15x = 1,821,557,009.46
5. Step 5: Solve for x
   x = 1,821,557,009.46/42,031.15
6. Step 6: Final answer
   x = 43,338.27