Finding the Fourth Proportional to 166,078.62, 248,909.18 and 71,196.56

Step by Step Solution

1. Step 1: Write the proportion equation
   166,078.62 : 248,909.18 = 71,196.56 : x
2. Step 2: Convert to fraction form
   166,078.62/248,909.18 = 71,196.56/x
3. Step 3: Cross multiply
   166,078.62x = 248,909.18 × 71,196.56
4. Step 4: Simplify right side
   166,078.62x = 17,721,477,368.42
5. Step 5: Solve for x
   x = 17,721,477,368.42/166,078.62
6. Step 6: Final answer
   x = 106,705.35