Finding the Fourth Proportional to 49,639, 68,500.27 and 28,416.85

Step by Step Solution

1. Step 1: Write the proportion equation
   49,639 : 68,500.27 = 28,416.85 : x
2. Step 2: Convert to fraction form
   49,639/68,500.27 = 28,416.85/x
3. Step 3: Cross multiply
   49,639x = 68,500.27 × 28,416.85
4. Step 4: Simplify right side
   49,639x = 1,946,561,897.55
5. Step 5: Solve for x
   x = 1,946,561,897.55/49,639
6. Step 6: Final answer
   x = 39,214.37