Finding the Fourth Proportional to 144,388.71, 216,619.97 and 55,618.38

Step by Step Solution

1. Step 1: Write the proportion equation
   144,388.71 : 216,619.97 = 55,618.38 : x
2. Step 2: Convert to fraction form
   144,388.71/216,619.97 = 55,618.38/x
3. Step 3: Cross multiply
   144,388.71x = 216,619.97 × 55,618.38
4. Step 4: Simplify right side
   144,388.71x = 12,048,051,528.96
5. Step 5: Solve for x
   x = 12,048,051,528.96/144,388.71
6. Step 6: Final answer
   x = 83,441.78