Finding the Fourth Proportional to 140,179.58, 193,446.51 and 86,443.10

Step by Step Solution

1. Step 1: Write the proportion equation
   140,179.58 : 193,446.51 = 86,443.10 : x
2. Step 2: Convert to fraction form
   140,179.58/193,446.51 = 86,443.10/x
3. Step 3: Cross multiply
   140,179.58x = 193,446.51 × 86,443.10
4. Step 4: Simplify right side
   140,179.58x = 16,722,115,041.35
5. Step 5: Solve for x
   x = 16,722,115,041.35/140,179.58
6. Step 6: Final answer
   x = 119,290.67