Finding the Fourth Proportional to 145,667.72, 218,523.09 and 74,630.54

Step by Step Solution

1. Step 1: Write the proportion equation
   145,667.72 : 218,523.09 = 74,630.54 : x
2. Step 2: Convert to fraction form
   145,667.72/218,523.09 = 74,630.54/x
3. Step 3: Cross multiply
   145,667.72x = 218,523.09 × 74,630.54
4. Step 4: Simplify right side
   145,667.72x = 16,308,496,209.17
5. Step 5: Solve for x
   x = 16,308,496,209.17/145,667.72
6. Step 6: Final answer
   x = 111,956.83