Finding the Fourth Proportional to 158,613.42, 218,886.66 and 86,994.84

Step by Step Solution

1. Step 1: Write the proportion equation
   158,613.42 : 218,886.66 = 86,994.84 : x
2. Step 2: Convert to fraction form
   158,613.42/218,886.66 = 86,994.84/x
3. Step 3: Cross multiply
   158,613.42x = 218,886.66 × 86,994.84
4. Step 4: Simplify right side
   158,613.42x = 19,042,009,964.83
5. Step 5: Solve for x
   x = 19,042,009,964.83/158,613.42
6. Step 6: Final answer
   x = 120,052.96