Finding the Fourth Proportional to 49,628.30, 68,459.33 and 30,494.78

Step by Step Solution

1. Step 1: Write the proportion equation
   49,628.30 : 68,459.33 = 30,494.78 : x
2. Step 2: Convert to fraction form
   49,628.30/68,459.33 = 30,494.78/x
3. Step 3: Cross multiply
   49,628.30x = 68,459.33 × 30,494.78
4. Step 4: Simplify right side
   49,628.30x = 2,087,652,026.43
5. Step 5: Solve for x
   x = 2,087,652,026.43/49,628.30
6. Step 6: Final answer
   x = 42,065.76