Finding the Fourth Proportional to 166,990.50, 250,500.42 and 42,331.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,990.50 : 250,500.42 = 42,331.50 : x
2. Step 2: Convert to fraction form
   166,990.50/250,500.42 = 42,331.50/x
3. Step 3: Cross multiply
   166,990.50x = 250,500.42 × 42,331.50
4. Step 4: Simplify right side
   166,990.50x = 10,604,058,529.23
5. Step 5: Solve for x
   x = 10,604,058,529.23/166,990.50
6. Step 6: Final answer
   x = 63,500.97