Finding the Fourth Proportional to 42,608.43, 58,905.92 and 31,979.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,608.43 : 58,905.92 = 31,979.61 : x
2. Step 2: Convert to fraction form
   42,608.43/58,905.92 = 31,979.61/x
3. Step 3: Cross multiply
   42,608.43x = 58,905.92 × 31,979.61
4. Step 4: Simplify right side
   42,608.43x = 1,883,788,188.39
5. Step 5: Solve for x
   x = 1,883,788,188.39/42,608.43
6. Step 6: Final answer
   x = 44,211.63