Finding the Fourth Proportional to 145,016.50, 217,499.67 and 38,401.99

Step by Step Solution

1. Step 1: Write the proportion equation
   145,016.50 : 217,499.67 = 38,401.99 : x
2. Step 2: Convert to fraction form
   145,016.50/217,499.67 = 38,401.99/x
3. Step 3: Cross multiply
   145,016.50x = 217,499.67 × 38,401.99
4. Step 4: Simplify right side
   145,016.50x = 8,352,420,152.34
5. Step 5: Solve for x
   x = 8,352,420,152.34/145,016.50
6. Step 6: Final answer
   x = 57,596.34