Finding the Fourth Proportional to 49,638.34, 68,499.03 and 28,419.58

Step by Step Solution

1. Step 1: Write the proportion equation
   49,638.34 : 68,499.03 = 28,419.58 : x
2. Step 2: Convert to fraction form
   49,638.34/68,499.03 = 28,419.58/x
3. Step 3: Cross multiply
   49,638.34x = 68,499.03 × 28,419.58
4. Step 4: Simplify right side
   49,638.34x = 1,946,713,663.01
5. Step 5: Solve for x
   x = 1,946,713,663.01/49,638.34
6. Step 6: Final answer
   x = 39,217.94