Finding the Fourth Proportional to 50,074.80, 69,128.28 and 31,222.32

Step by Step Solution

1. Step 1: Write the proportion equation
   50,074.80 : 69,128.28 = 31,222.32 : x
2. Step 2: Convert to fraction form
   50,074.80/69,128.28 = 31,222.32/x
3. Step 3: Cross multiply
   50,074.80x = 69,128.28 × 31,222.32
4. Step 4: Simplify right side
   50,074.80x = 2,158,345,279.21
5. Step 5: Solve for x
   x = 2,158,345,279.21/50,074.80
6. Step 6: Final answer
   x = 43,102.42