Finding the Fourth Proportional to 67,388.55, 100,872.48 and 49,639.22

Step by Step Solution

1. Step 1: Write the proportion equation
   67,388.55 : 100,872.48 = 49,639.22 : x
2. Step 2: Convert to fraction form
   67,388.55/100,872.48 = 49,639.22/x
3. Step 3: Cross multiply
   67,388.55x = 100,872.48 × 49,639.22
4. Step 4: Simplify right side
   67,388.55x = 5,007,230,978.47
5. Step 5: Solve for x
   x = 5,007,230,978.47/67,388.55
6. Step 6: Final answer
   x = 74,303.89