Finding the Fourth Proportional to 110,978.10, 166,491.45 and 54,845.10

Step by Step Solution

1. Step 1: Write the proportion equation
   110,978.10 : 166,491.45 = 54,845.10 : x
2. Step 2: Convert to fraction form
   110,978.10/166,491.45 = 54,845.10/x
3. Step 3: Cross multiply
   110,978.10x = 166,491.45 × 54,845.10
4. Step 4: Simplify right side
   110,978.10x = 9,131,240,224.40
5. Step 5: Solve for x
   x = 9,131,240,224.40/110,978.10
6. Step 6: Final answer
   x = 82,279.66