Finding the Fourth Proportional to 166,106.72, 229,147.54 and 108,720.78

Step by Step Solution

1. Step 1: Write the proportion equation
   166,106.72 : 229,147.54 = 108,720.78 : x
2. Step 2: Convert to fraction form
   166,106.72/229,147.54 = 108,720.78/x
3. Step 3: Cross multiply
   166,106.72x = 229,147.54 × 108,720.78
4. Step 4: Simplify right side
   166,106.72x = 24,913,097,594.54
5. Step 5: Solve for x
   x = 24,913,097,594.54/166,106.72
6. Step 6: Final answer
   x = 149,982.48