Finding the Fourth Proportional to 31,068.09, 42,881.69 and 19,141.65

Step by Step Solution

1. Step 1: Write the proportion equation
   31,068.09 : 42,881.69 = 19,141.65 : x
2. Step 2: Convert to fraction form
   31,068.09/42,881.69 = 19,141.65/x
3. Step 3: Cross multiply
   31,068.09x = 42,881.69 × 19,141.65
4. Step 4: Simplify right side
   31,068.09x = 820,826,301.39
5. Step 5: Solve for x
   x = 820,826,301.39/31,068.09
6. Step 6: Final answer
   x = 26,420.24