Finding the Fourth Proportional to 105,522.21, 158,258.70 and 49,401

Step by Step Solution

1. Step 1: Write the proportion equation
   105,522.21 : 158,258.70 = 49,401 : x
2. Step 2: Convert to fraction form
   105,522.21/158,258.70 = 49,401/x
3. Step 3: Cross multiply
   105,522.21x = 158,258.70 × 49,401
4. Step 4: Simplify right side
   105,522.21x = 7,818,138,038.70
5. Step 5: Solve for x
   x = 7,818,138,038.70/105,522.21
6. Step 6: Final answer
   x = 74,089.98