Finding the Fourth Proportional to 120,814.57, 181,175.71 and 39,742.75

Step by Step Solution

1. Step 1: Write the proportion equation
   120,814.57 : 181,175.71 = 39,742.75 : x
2. Step 2: Convert to fraction form
   120,814.57/181,175.71 = 39,742.75/x
3. Step 3: Cross multiply
   120,814.57x = 181,175.71 × 39,742.75
4. Step 4: Simplify right side
   120,814.57x = 7,200,420,749.89
5. Step 5: Solve for x
   x = 7,200,420,749.89/120,814.57
6. Step 6: Final answer
   x = 59,598.94