Finding the Fourth Proportional to 120,019.67, 165,624.74 and 66,303.31

Step by Step Solution

1. Step 1: Write the proportion equation
   120,019.67 : 165,624.74 = 66,303.31 : x
2. Step 2: Convert to fraction form
   120,019.67/165,624.74 = 66,303.31/x
3. Step 3: Cross multiply
   120,019.67x = 165,624.74 × 66,303.31
4. Step 4: Simplify right side
   120,019.67x = 10,981,468,065.83
5. Step 5: Solve for x
   x = 10,981,468,065.83/120,019.67
6. Step 6: Final answer
   x = 91,497.23