Finding the Fourth Proportional to 162,439.82, 243,682.59 and 50,129.15

Step by Step Solution

1. Step 1: Write the proportion equation
   162,439.82 : 243,682.59 = 50,129.15 : x
2. Step 2: Convert to fraction form
   162,439.82/243,682.59 = 50,129.15/x
3. Step 3: Cross multiply
   162,439.82x = 243,682.59 × 50,129.15
4. Step 4: Simplify right side
   162,439.82x = 12,215,601,106.50
5. Step 5: Solve for x
   x = 12,215,601,106.50/162,439.82
6. Step 6: Final answer
   x = 75,200.78