Finding the Fourth Proportional to 158,544.34, 218,789.57 and 86,924.21

Step by Step Solution

1. Step 1: Write the proportion equation
   158,544.34 : 218,789.57 = 86,924.21 : x
2. Step 2: Convert to fraction form
   158,544.34/218,789.57 = 86,924.21/x
3. Step 3: Cross multiply
   158,544.34x = 218,789.57 × 86,924.21
4. Step 4: Simplify right side
   158,544.34x = 19,018,109,651.85
5. Step 5: Solve for x
   x = 19,018,109,651.85/158,544.34
6. Step 6: Final answer
   x = 119,954.52