Finding the Fourth Proportional to 149,103.79, 205,768.15 and 85,453.79

Step by Step Solution

1. Step 1: Write the proportion equation
   149,103.79 : 205,768.15 = 85,453.79 : x
2. Step 2: Convert to fraction form
   149,103.79/205,768.15 = 85,453.79/x
3. Step 3: Cross multiply
   149,103.79x = 205,768.15 × 85,453.79
4. Step 4: Simplify right side
   149,103.79x = 17,583,667,036.31
5. Step 5: Solve for x
   x = 17,583,667,036.31/149,103.79
6. Step 6: Final answer
   x = 117,929.04