Finding the Fourth Proportional to 50,255.74, 69,330.72 and 31,130.47

Step by Step Solution

1. Step 1: Write the proportion equation
   50,255.74 : 69,330.72 = 31,130.47 : x
2. Step 2: Convert to fraction form
   50,255.74/69,330.72 = 31,130.47/x
3. Step 3: Cross multiply
   50,255.74x = 69,330.72 × 31,130.47
4. Step 4: Simplify right side
   50,255.74x = 2,158,297,899.04
5. Step 5: Solve for x
   x = 2,158,297,899.04/50,255.74
6. Step 6: Final answer
   x = 42,946.30