Finding the Fourth Proportional to 50,148.69, 69,191.40 and 31,019.28

Step by Step Solution

1. Step 1: Write the proportion equation
   50,148.69 : 69,191.40 = 31,019.28 : x
2. Step 2: Convert to fraction form
   50,148.69/69,191.40 = 31,019.28/x
3. Step 3: Cross multiply
   50,148.69x = 69,191.40 × 31,019.28
4. Step 4: Simplify right side
   50,148.69x = 2,146,267,410.19
5. Step 5: Solve for x
   x = 2,146,267,410.19/50,148.69
6. Step 6: Final answer
   x = 42,798.08