Finding the Fourth Proportional to 155,107.30, 214,043.38 and 86,196.52

Step by Step Solution

1. Step 1: Write the proportion equation
   155,107.30 : 214,043.38 = 86,196.52 : x
2. Step 2: Convert to fraction form
   155,107.30/214,043.38 = 86,196.52/x
3. Step 3: Cross multiply
   155,107.30x = 214,043.38 × 86,196.52
4. Step 4: Simplify right side
   155,107.30x = 18,449,794,485.04
5. Step 5: Solve for x
   x = 18,449,794,485.04/155,107.30
6. Step 6: Final answer
   x = 118,948.59