Finding the Fourth Proportional to 50,345.25, 69,459.13 and 31,218.13

Step by Step Solution

1. Step 1: Write the proportion equation
   50,345.25 : 69,459.13 = 31,218.13 : x
2. Step 2: Convert to fraction form
   50,345.25/69,459.13 = 31,218.13/x
3. Step 3: Cross multiply
   50,345.25x = 69,459.13 × 31,218.13
4. Step 4: Simplify right side
   50,345.25x = 2,168,384,150.03
5. Step 5: Solve for x
   x = 2,168,384,150.03/50,345.25
6. Step 6: Final answer
   x = 43,070.28