Finding the Fourth Proportional to 78,516.98, 108,343.61 and 53,078.67

Step by Step Solution

1. Step 1: Write the proportion equation
   78,516.98 : 108,343.61 = 53,078.67 : x
2. Step 2: Convert to fraction form
   78,516.98/108,343.61 = 53,078.67/x
3. Step 3: Cross multiply
   78,516.98x = 108,343.61 × 53,078.67
4. Step 4: Simplify right side
   78,516.98x = 5,750,734,456.41
5. Step 5: Solve for x
   x = 5,750,734,456.41/78,516.98
6. Step 6: Final answer
   x = 73,241.93