Finding the Fourth Proportional to 143,989.30, 215,916.18 and 49,194.10

Step by Step Solution

1. Step 1: Write the proportion equation
   143,989.30 : 215,916.18 = 49,194.10 : x
2. Step 2: Convert to fraction form
   143,989.30/215,916.18 = 49,194.10/x
3. Step 3: Cross multiply
   143,989.30x = 215,916.18 × 49,194.10
4. Step 4: Simplify right side
   143,989.30x = 10,621,802,150.54
5. Step 5: Solve for x
   x = 10,621,802,150.54/143,989.30
6. Step 6: Final answer
   x = 73,768.00