Finding the Fourth Proportional to 78,382.58, 108,108.69 and 54,497.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,382.58 : 108,108.69 = 54,497.30 : x
2. Step 2: Convert to fraction form
   78,382.58/108,108.69 = 54,497.30/x
3. Step 3: Cross multiply
   78,382.58x = 108,108.69 × 54,497.30
4. Step 4: Simplify right side
   78,382.58x = 5,891,631,711.54
5. Step 5: Solve for x
   x = 5,891,631,711.54/78,382.58
6. Step 6: Final answer
   x = 75,165.06