Finding the Fourth Proportional to 67,983.20, 93,814.86 and 38,912.30

Step by Step Solution

1. Step 1: Write the proportion equation
   67,983.20 : 93,814.86 = 38,912.30 : x
2. Step 2: Convert to fraction form
   67,983.20/93,814.86 = 38,912.30/x
3. Step 3: Cross multiply
   67,983.20x = 93,814.86 × 38,912.30
4. Step 4: Simplify right side
   67,983.20x = 3,650,551,976.78
5. Step 5: Solve for x
   x = 3,650,551,976.78/67,983.20
6. Step 6: Final answer
   x = 53,697.85