Finding the Fourth Proportional to 42,619.09, 58,920.63 and 31,990.27

Step by Step Solution

1. Step 1: Write the proportion equation
   42,619.09 : 58,920.63 = 31,990.27 : x
2. Step 2: Convert to fraction form
   42,619.09/58,920.63 = 31,990.27/x
3. Step 3: Cross multiply
   42,619.09x = 58,920.63 × 31,990.27
4. Step 4: Simplify right side
   42,619.09x = 1,884,886,862.27
5. Step 5: Solve for x
   x = 1,884,886,862.27/42,619.09
6. Step 6: Final answer
   x = 44,226.35