Finding the Fourth Proportional to 105,799.42, 158,514.59 and 88,143.49

Step by Step Solution

1. Step 1: Write the proportion equation
   105,799.42 : 158,514.59 = 88,143.49 : x
2. Step 2: Convert to fraction form
   105,799.42/158,514.59 = 88,143.49/x
3. Step 3: Cross multiply
   105,799.42x = 158,514.59 × 88,143.49
4. Step 4: Simplify right side
   105,799.42x = 13,972,029,101.21
5. Step 5: Solve for x
   x = 13,972,029,101.21/105,799.42
6. Step 6: Final answer
   x = 132,061.50