Finding the Fourth Proportional to 50,019.12, 69,047.64 and 31,165.56

Step by Step Solution

1. Step 1: Write the proportion equation
   50,019.12 : 69,047.64 = 31,165.56 : x
2. Step 2: Convert to fraction form
   50,019.12/69,047.64 = 31,165.56/x
3. Step 3: Cross multiply
   50,019.12x = 69,047.64 × 31,165.56
4. Step 4: Simplify right side
   50,019.12x = 2,151,908,367.28
5. Step 5: Solve for x
   x = 2,151,908,367.28/50,019.12
6. Step 6: Final answer
   x = 43,021.72