Finding the Fourth Proportional to 166,027.98, 248,914.50 and 85,980.54

Step by Step Solution

1. Step 1: Write the proportion equation
   166,027.98 : 248,914.50 = 85,980.54 : x
2. Step 2: Convert to fraction form
   166,027.98/248,914.50 = 85,980.54/x
3. Step 3: Cross multiply
   166,027.98x = 248,914.50 × 85,980.54
4. Step 4: Simplify right side
   166,027.98x = 21,401,803,123.83
5. Step 5: Solve for x
   x = 21,401,803,123.83/166,027.98
6. Step 6: Final answer
   x = 128,904.80