Finding the Fourth Proportional to 50,256.99, 69,332.45 and 31,131.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,256.99 : 69,332.45 = 31,131.72 : x
2. Step 2: Convert to fraction form
   50,256.99/69,332.45 = 31,131.72/x
3. Step 3: Cross multiply
   50,256.99x = 69,332.45 × 31,131.72
4. Step 4: Simplify right side
   50,256.99x = 2,158,438,264.66
5. Step 5: Solve for x
   x = 2,158,438,264.66/50,256.99
6. Step 6: Final answer
   x = 42,948.02