Finding the Fourth Proportional to 50,722.25, 76,068.50 and 19,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,722.25 : 76,068.50 = 19,109.50 : x
2. Step 2: Convert to fraction form
   50,722.25/76,068.50 = 19,109.50/x
3. Step 3: Cross multiply
   50,722.25x = 76,068.50 × 19,109.50
4. Step 4: Simplify right side
   50,722.25x = 1,453,631,000.75
5. Step 5: Solve for x
   x = 1,453,631,000.75/50,722.25
6. Step 6: Final answer
   x = 28,658.65