Finding the Fourth Proportional to 145,616.27, 218,451.94 and 56,864.16

Step by Step Solution

1. Step 1: Write the proportion equation
   145,616.27 : 218,451.94 = 56,864.16 : x
2. Step 2: Convert to fraction form
   145,616.27/218,451.94 = 56,864.16/x
3. Step 3: Cross multiply
   145,616.27x = 218,451.94 × 56,864.16
4. Step 4: Simplify right side
   145,616.27x = 12,422,085,926.31
5. Step 5: Solve for x
   x = 12,422,085,926.31/145,616.27
6. Step 6: Final answer
   x = 85,306.99