Finding the Fourth Proportional to 166,111.17, 229,233.60 and 90,659.67

Step by Step Solution

1. Step 1: Write the proportion equation
   166,111.17 : 229,233.60 = 90,659.67 : x
2. Step 2: Convert to fraction form
   166,111.17/229,233.60 = 90,659.67/x
3. Step 3: Cross multiply
   166,111.17x = 229,233.60 × 90,659.67
4. Step 4: Simplify right side
   166,111.17x = 20,782,242,528.91
5. Step 5: Solve for x
   x = 20,782,242,528.91/166,111.17
6. Step 6: Final answer
   x = 125,110.45