Finding the Fourth Proportional to 154,667.18, 213,458.42 and 86,702.52

Step by Step Solution

1. Step 1: Write the proportion equation
   154,667.18 : 213,458.42 = 86,702.52 : x
2. Step 2: Convert to fraction form
   154,667.18/213,458.42 = 86,702.52/x
3. Step 3: Cross multiply
   154,667.18x = 213,458.42 × 86,702.52
4. Step 4: Simplify right side
   154,667.18x = 18,507,382,929.22
5. Step 5: Solve for x
   x = 18,507,382,929.22/154,667.18
6. Step 6: Final answer
   x = 119,659.41