Finding the Fourth Proportional to 50,307.36, 69,421.20 and 29,085.12

Step by Step Solution

1. Step 1: Write the proportion equation
   50,307.36 : 69,421.20 = 29,085.12 : x
2. Step 2: Convert to fraction form
   50,307.36/69,421.20 = 29,085.12/x
3. Step 3: Cross multiply
   50,307.36x = 69,421.20 × 29,085.12
4. Step 4: Simplify right side
   50,307.36x = 2,019,123,932.54
5. Step 5: Solve for x
   x = 2,019,123,932.54/50,307.36
6. Step 6: Final answer
   x = 40,135.76