Finding the Fourth Proportional to 162,478.81, 243,628.91 and 50,128.37

Step by Step Solution

1. Step 1: Write the proportion equation
   162,478.81 : 243,628.91 = 50,128.37 : x
2. Step 2: Convert to fraction form
   162,478.81/243,628.91 = 50,128.37/x
3. Step 3: Cross multiply
   162,478.81x = 243,628.91 × 50,128.37
4. Step 4: Simplify right side
   162,478.81x = 12,212,718,674.39
5. Step 5: Solve for x
   x = 12,212,718,674.39/162,478.81
6. Step 6: Final answer
   x = 75,165.00