Finding the Fourth Proportional to 120,826.86, 166,736.42 and 67,115.31

Step by Step Solution

1. Step 1: Write the proportion equation
   120,826.86 : 166,736.42 = 67,115.31 : x
2. Step 2: Convert to fraction form
   120,826.86/166,736.42 = 67,115.31/x
3. Step 3: Cross multiply
   120,826.86x = 166,736.42 × 67,115.31
4. Step 4: Simplify right side
   120,826.86x = 11,190,566,181.01
5. Step 5: Solve for x
   x = 11,190,566,181.01/120,826.86
6. Step 6: Final answer
   x = 92,616.54