Finding the Fourth Proportional to 166,538.54, 229,818.48 and 91,085.42

Step by Step Solution

1. Step 1: Write the proportion equation
   166,538.54 : 229,818.48 = 91,085.42 : x
2. Step 2: Convert to fraction form
   166,538.54/229,818.48 = 91,085.42/x
3. Step 3: Cross multiply
   166,538.54x = 229,818.48 × 91,085.42
4. Step 4: Simplify right side
   166,538.54x = 20,933,112,774.56
5. Step 5: Solve for x
   x = 20,933,112,774.56/166,538.54
6. Step 6: Final answer
   x = 125,695.31