Finding the Fourth Proportional to 31,011.20, 42,805.06 and 23,064.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,011.20 : 42,805.06 = 23,064.19 : x
2. Step 2: Convert to fraction form
   31,011.20/42,805.06 = 23,064.19/x
3. Step 3: Cross multiply
   31,011.20x = 42,805.06 × 23,064.19
4. Step 4: Simplify right side
   31,011.20x = 987,264,112.91
5. Step 5: Solve for x
   x = 987,264,112.91/31,011.20
6. Step 6: Final answer
   x = 31,835.72