Finding the Fourth Proportional to 31,144.82, 42,956.07 and 19,816.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,144.82 : 42,956.07 = 19,816.16 : x
2. Step 2: Convert to fraction form
   31,144.82/42,956.07 = 19,816.16/x
3. Step 3: Cross multiply
   31,144.82x = 42,956.07 × 19,816.16
4. Step 4: Simplify right side
   31,144.82x = 851,224,356.09
5. Step 5: Solve for x
   x = 851,224,356.09/31,144.82
6. Step 6: Final answer
   x = 27,331.17