Finding the Fourth Proportional to 158,106.06, 218,191.61 and 86,486.16

Step by Step Solution

1. Step 1: Write the proportion equation
   158,106.06 : 218,191.61 = 86,486.16 : x
2. Step 2: Convert to fraction form
   158,106.06/218,191.61 = 86,486.16/x
3. Step 3: Cross multiply
   158,106.06x = 218,191.61 × 86,486.16
4. Step 4: Simplify right side
   158,106.06x = 18,870,554,060.69
5. Step 5: Solve for x
   x = 18,870,554,060.69/158,106.06
6. Step 6: Final answer
   x = 119,353.77