Finding the Fourth Proportional to 55,717.50, 76,890.57 and 30,567

Step by Step Solution

1. Step 1: Write the proportion equation
   55,717.50 : 76,890.57 = 30,567 : x
2. Step 2: Convert to fraction form
   55,717.50/76,890.57 = 30,567/x
3. Step 3: Cross multiply
   55,717.50x = 76,890.57 × 30,567
4. Step 4: Simplify right side
   55,717.50x = 2,350,314,053.19
5. Step 5: Solve for x
   x = 2,350,314,053.19/55,717.50
6. Step 6: Final answer
   x = 42,182.69