Finding the Fourth Proportional to 50,986.17, 70,346.28 and 30,828.42

Step by Step Solution

1. Step 1: Write the proportion equation
   50,986.17 : 70,346.28 = 30,828.42 : x
2. Step 2: Convert to fraction form
   50,986.17/70,346.28 = 30,828.42/x
3. Step 3: Cross multiply
   50,986.17x = 70,346.28 × 30,828.42
4. Step 4: Simplify right side
   50,986.17x = 2,168,664,665.28
5. Step 5: Solve for x
   x = 2,168,664,665.28/50,986.17
6. Step 6: Final answer
   x = 42,534.37