Finding the Fourth Proportional to 166,680.50, 230,019.09 and 91,229

Step by Step Solution

1. Step 1: Write the proportion equation
   166,680.50 : 230,019.09 = 91,229 : x
2. Step 2: Convert to fraction form
   166,680.50/230,019.09 = 91,229/x
3. Step 3: Cross multiply
   166,680.50x = 230,019.09 × 91,229
4. Step 4: Simplify right side
   166,680.50x = 20,984,411,561.61
5. Step 5: Solve for x
   x = 20,984,411,561.61/166,680.50
6. Step 6: Final answer
   x = 125,896.02