Finding the Fourth Proportional to 55,339.50, 76,368.78 and 30,189

Step by Step Solution

1. Step 1: Write the proportion equation
   55,339.50 : 76,368.78 = 30,189 : x
2. Step 2: Convert to fraction form
   55,339.50/76,368.78 = 30,189/x
3. Step 3: Cross multiply
   55,339.50x = 76,368.78 × 30,189
4. Step 4: Simplify right side
   55,339.50x = 2,305,497,099.42
5. Step 5: Solve for x
   x = 2,305,497,099.42/55,339.50
6. Step 6: Final answer
   x = 41,660.97