Finding the Fourth Proportional to 31,065.76, 42,872.52 and 19,141.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,065.76 : 42,872.52 = 19,141.84 : x
2. Step 2: Convert to fraction form
   31,065.76/42,872.52 = 19,141.84/x
3. Step 3: Cross multiply
   31,065.76x = 42,872.52 × 19,141.84
4. Step 4: Simplify right side
   31,065.76x = 820,658,918.24
5. Step 5: Solve for x
   x = 820,658,918.24/31,065.76
6. Step 6: Final answer
   x = 26,416.83