Finding the Fourth Proportional to 50,161.90, 69,223.98 and 28,654.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,161.90 : 69,223.98 = 28,654.50 : x
2. Step 2: Convert to fraction form
   50,161.90/69,223.98 = 28,654.50/x
3. Step 3: Cross multiply
   50,161.90x = 69,223.98 × 28,654.50
4. Step 4: Simplify right side
   50,161.90x = 1,983,578,534.91
5. Step 5: Solve for x
   x = 1,983,578,534.91/50,161.90
6. Step 6: Final answer
   x = 39,543.53