Finding the Fourth Proportional to 154,667.63, 213,441.04 and 86,684.58

Step by Step Solution

1. Step 1: Write the proportion equation
   154,667.63 : 213,441.04 = 86,684.58 : x
2. Step 2: Convert to fraction form
   154,667.63/213,441.04 = 86,684.58/x
3. Step 3: Cross multiply
   154,667.63x = 213,441.04 × 86,684.58
4. Step 4: Simplify right side
   154,667.63x = 18,502,046,649.82
5. Step 5: Solve for x
   x = 18,502,046,649.82/154,667.63
6. Step 6: Final answer
   x = 119,624.56