Finding the Fourth Proportional to 139,289.50, 209,017.27 and 50,549.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,289.50 : 209,017.27 = 50,549.94 : x
2. Step 2: Convert to fraction form
   139,289.50/209,017.27 = 50,549.94/x
3. Step 3: Cross multiply
   139,289.50x = 209,017.27 × 50,549.94
4. Step 4: Simplify right side
   139,289.50x = 10,565,810,457.46
5. Step 5: Solve for x
   x = 10,565,810,457.46/139,289.50
6. Step 6: Final answer
   x = 75,855.04