Finding the Fourth Proportional to 105,804.72, 158,731.25 and 45,843.15

Step by Step Solution

1. Step 1: Write the proportion equation
   105,804.72 : 158,731.25 = 45,843.15 : x
2. Step 2: Convert to fraction form
   105,804.72/158,731.25 = 45,843.15/x
3. Step 3: Cross multiply
   105,804.72x = 158,731.25 × 45,843.15
4. Step 4: Simplify right side
   105,804.72x = 7,276,740,274.22
5. Step 5: Solve for x
   x = 7,276,740,274.22/105,804.72
6. Step 6: Final answer
   x = 68,775.20