Finding the Fourth Proportional to 50,826.28, 70,143.96 and 30,688.06

Step by Step Solution

1. Step 1: Write the proportion equation
   50,826.28 : 70,143.96 = 30,688.06 : x
2. Step 2: Convert to fraction form
   50,826.28/70,143.96 = 30,688.06/x
3. Step 3: Cross multiply
   50,826.28x = 70,143.96 × 30,688.06
4. Step 4: Simplify right side
   50,826.28x = 2,152,582,053.12
5. Step 5: Solve for x
   x = 2,152,582,053.12/50,826.28
6. Step 6: Final answer
   x = 42,351.75