Finding the Fourth Proportional to 166,788, 230,168.16 and 91,337.76

Step by Step Solution

1. Step 1: Write the proportion equation
   166,788 : 230,168.16 = 91,337.76 : x
2. Step 2: Convert to fraction form
   166,788/230,168.16 = 91,337.76/x
3. Step 3: Cross multiply
   166,788x = 230,168.16 × 91,337.76
4. Step 4: Simplify right side
   166,788x = 21,023,044,157.72
5. Step 5: Solve for x
   x = 21,023,044,157.72/166,788
6. Step 6: Final answer
   x = 126,046.50