Finding the Fourth Proportional to 31,117.07, 42,944.79 and 19,180.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,117.07 : 42,944.79 = 19,180.10 : x
2. Step 2: Convert to fraction form
   31,117.07/42,944.79 = 19,180.10/x
3. Step 3: Cross multiply
   31,117.07x = 42,944.79 × 19,180.10
4. Step 4: Simplify right side
   31,117.07x = 823,685,151.96
5. Step 5: Solve for x
   x = 823,685,151.96/31,117.07
6. Step 6: Final answer
   x = 26,470.53