Finding the Fourth Proportional to 105,615.36, 158,436 and 49,426.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,615.36 : 158,436 = 49,426.56 : x
2. Step 2: Convert to fraction form
   105,615.36/158,436 = 49,426.56/x
3. Step 3: Cross multiply
   105,615.36x = 158,436 × 49,426.56
4. Step 4: Simplify right side
   105,615.36x = 7,830,946,460.16
5. Step 5: Solve for x
   x = 7,830,946,460.16/105,615.36
6. Step 6: Final answer
   x = 74,145.91