Finding the Fourth Proportional to 58,519.61, 80,756.49 and 31,661.53

Step by Step Solution

1. Step 1: Write the proportion equation
   58,519.61 : 80,756.49 = 31,661.53 : x
2. Step 2: Convert to fraction form
   58,519.61/80,756.49 = 31,661.53/x
3. Step 3: Cross multiply
   58,519.61x = 80,756.49 × 31,661.53
4. Step 4: Simplify right side
   58,519.61x = 2,556,874,401.92
5. Step 5: Solve for x
   x = 2,556,874,401.92/58,519.61
6. Step 6: Final answer
   x = 43,692.61