Finding the Fourth Proportional to 105,378.88, 158,068.14 and 49,200.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,378.88 : 158,068.14 = 49,200.16 : x
2. Step 2: Convert to fraction form
   105,378.88/158,068.14 = 49,200.16/x
3. Step 3: Cross multiply
   105,378.88x = 158,068.14 × 49,200.16
4. Step 4: Simplify right side
   105,378.88x = 7,776,977,778.90
5. Step 5: Solve for x
   x = 7,776,977,778.90/105,378.88
6. Step 6: Final answer
   x = 73,800.16