Finding the Fourth Proportional to 411,443.76, 617,398.76 and 162,300.72

Step by Step Solution

1. Step 1: Write the proportion equation
   411,443.76 : 617,398.76 = 162,300.72 : x
2. Step 2: Convert to fraction form
   411,443.76/617,398.76 = 162,300.72/x
3. Step 3: Cross multiply
   411,443.76x = 617,398.76 × 162,300.72
4. Step 4: Simplify right side
   411,443.76x = 100,204,263,275.11
5. Step 5: Solve for x
   x = 100,204,263,275.11/411,443.76
6. Step 6: Final answer
   x = 243,543.04