Finding the Fourth Proportional to 145,167.12, 216,668.88 and 141,624.72

Step by Step Solution

1. Step 1: Write the proportion equation
   145,167.12 : 216,668.88 = 141,624.72 : x
2. Step 2: Convert to fraction form
   145,167.12/216,668.88 = 141,624.72/x
3. Step 3: Cross multiply
   145,167.12x = 216,668.88 × 141,624.72
4. Step 4: Simplify right side
   145,167.12x = 30,685,669,462.71
5. Step 5: Solve for x
   x = 30,685,669,462.71/145,167.12
6. Step 6: Final answer
   x = 211,381.68