Finding the Fourth Proportional to 158,300.58, 218,454.72 and 86,680.56

Step by Step Solution

1. Step 1: Write the proportion equation
   158,300.58 : 218,454.72 = 86,680.56 : x
2. Step 2: Convert to fraction form
   158,300.58/218,454.72 = 86,680.56/x
3. Step 3: Cross multiply
   158,300.58x = 218,454.72 × 86,680.56
4. Step 4: Simplify right side
   158,300.58x = 18,935,777,464.24
5. Step 5: Solve for x
   x = 18,935,777,464.24/158,300.58
6. Step 6: Final answer
   x = 119,619.13