Finding the Fourth Proportional to 45,657.68, 68,491.98 and 19,359

Step by Step Solution

1. Step 1: Write the proportion equation
   45,657.68 : 68,491.98 = 19,359 : x
2. Step 2: Convert to fraction form
   45,657.68/68,491.98 = 19,359/x
3. Step 3: Cross multiply
   45,657.68x = 68,491.98 × 19,359
4. Step 4: Simplify right side
   45,657.68x = 1,325,936,240.82
5. Step 5: Solve for x
   x = 1,325,936,240.82/45,657.68
6. Step 6: Final answer
   x = 29,040.82