Finding the Fourth Proportional to 120,061.85, 165,688.74 and 66,350.34

Step by Step Solution

1. Step 1: Write the proportion equation
   120,061.85 : 165,688.74 = 66,350.34 : x
2. Step 2: Convert to fraction form
   120,061.85/165,688.74 = 66,350.34/x
3. Step 3: Cross multiply
   120,061.85x = 165,688.74 × 66,350.34
4. Step 4: Simplify right side
   120,061.85x = 10,993,504,233.17
5. Step 5: Solve for x
   x = 10,993,504,233.17/120,061.85
6. Step 6: Final answer
   x = 91,565.34