Finding the Fourth Proportional to 105,908.78, 158,765.82 and 45,899.63

Step by Step Solution

1. Step 1: Write the proportion equation
   105,908.78 : 158,765.82 = 45,899.63 : x
2. Step 2: Convert to fraction form
   105,908.78/158,765.82 = 45,899.63/x
3. Step 3: Cross multiply
   105,908.78x = 158,765.82 × 45,899.63
4. Step 4: Simplify right side
   105,908.78x = 7,287,291,600.82
5. Step 5: Solve for x
   x = 7,287,291,600.82/105,908.78
6. Step 6: Final answer
   x = 68,807.25