Finding the Fourth Proportional to 80,389.69, 110,975.87 and 53,576.89

Step by Step Solution

1. Step 1: Write the proportion equation
   80,389.69 : 110,975.87 = 53,576.89 : x
2. Step 2: Convert to fraction form
   80,389.69/110,975.87 = 53,576.89/x
3. Step 3: Cross multiply
   80,389.69x = 110,975.87 × 53,576.89
4. Step 4: Simplify right side
   80,389.69x = 5,945,741,711.76
5. Step 5: Solve for x
   x = 5,945,741,711.76/80,389.69
6. Step 6: Final answer
   x = 73,961.50