Finding the Fourth Proportional to 171,610.31, 236,559.71 and 120,479.60

Step by Step Solution

1. Step 1: Write the proportion equation
   171,610.31 : 236,559.71 = 120,479.60 : x
2. Step 2: Convert to fraction form
   171,610.31/236,559.71 = 120,479.60/x
3. Step 3: Cross multiply
   171,610.31x = 236,559.71 × 120,479.60
4. Step 4: Simplify right side
   171,610.31x = 28,500,617,451.72
5. Step 5: Solve for x
   x = 28,500,617,451.72/171,610.31
6. Step 6: Final answer
   x = 166,077.54