Finding the Fourth Proportional to 50,495, 69,683.10 and 28,139

Step by Step Solution

1. Step 1: Write the proportion equation
   50,495 : 69,683.10 = 28,139 : x
2. Step 2: Convert to fraction form
   50,495/69,683.10 = 28,139/x
3. Step 3: Cross multiply
   50,495x = 69,683.10 × 28,139
4. Step 4: Simplify right side
   50,495x = 1,960,812,750.90
5. Step 5: Solve for x
   x = 1,960,812,750.90/50,495
6. Step 6: Final answer
   x = 38,831.82