Finding the Fourth Proportional to 31,158.89, 43,004.21 and 19,816.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,158.89 : 43,004.21 = 19,816.56 : x
2. Step 2: Convert to fraction form
   31,158.89/43,004.21 = 19,816.56/x
3. Step 3: Cross multiply
   31,158.89x = 43,004.21 × 19,816.56
4. Step 4: Simplify right side
   31,158.89x = 852,195,507.72
5. Step 5: Solve for x
   x = 852,195,507.72/31,158.89
6. Step 6: Final answer
   x = 27,350.00