Finding the Fourth Proportional to 145,019.46, 217,487.10 and 60,777.42

Step by Step Solution

1. Step 1: Write the proportion equation
   145,019.46 : 217,487.10 = 60,777.42 : x
2. Step 2: Convert to fraction form
   145,019.46/217,487.10 = 60,777.42/x
3. Step 3: Cross multiply
   145,019.46x = 217,487.10 × 60,777.42
4. Step 4: Simplify right side
   145,019.46x = 13,218,304,821.28
5. Step 5: Solve for x
   x = 13,218,304,821.28/145,019.46
6. Step 6: Final answer
   x = 91,148.49