Finding the Fourth Proportional to 120,719.56, 166,589.88 and 67,003

Step by Step Solution

1. Step 1: Write the proportion equation
   120,719.56 : 166,589.88 = 67,003 : x
2. Step 2: Convert to fraction form
   120,719.56/166,589.88 = 67,003/x
3. Step 3: Cross multiply
   120,719.56x = 166,589.88 × 67,003
4. Step 4: Simplify right side
   120,719.56x = 11,162,021,729.64
5. Step 5: Solve for x
   x = 11,162,021,729.64/120,719.56
6. Step 6: Final answer
   x = 92,462.41