Finding the Fourth Proportional to 52,089.15, 71,881.55 and 30,578.55

Step by Step Solution

1. Step 1: Write the proportion equation
   52,089.15 : 71,881.55 = 30,578.55 : x
2. Step 2: Convert to fraction form
   52,089.15/71,881.55 = 30,578.55/x
3. Step 3: Cross multiply
   52,089.15x = 71,881.55 × 30,578.55
4. Step 4: Simplify right side
   52,089.15x = 2,198,033,415.16
5. Step 5: Solve for x
   x = 2,198,033,415.16/52,089.15
6. Step 6: Final answer
   x = 42,197.53