Finding the Fourth Proportional to 50,823.28, 70,139.82 and 30,685.06

Step by Step Solution

1. Step 1: Write the proportion equation
   50,823.28 : 70,139.82 = 30,685.06 : x
2. Step 2: Convert to fraction form
   50,823.28/70,139.82 = 30,685.06/x
3. Step 3: Cross multiply
   50,823.28x = 70,139.82 × 30,685.06
4. Step 4: Simplify right side
   50,823.28x = 2,152,244,585.09
5. Step 5: Solve for x
   x = 2,152,244,585.09/50,823.28
6. Step 6: Final answer
   x = 42,347.61