Finding the Fourth Proportional to 120,100.75, 180,089.91 and 40,109.94

Step by Step Solution

1. Step 1: Write the proportion equation
   120,100.75 : 180,089.91 = 40,109.94 : x
2. Step 2: Convert to fraction form
   120,100.75/180,089.91 = 40,109.94/x
3. Step 3: Cross multiply
   120,100.75x = 180,089.91 × 40,109.94
4. Step 4: Simplify right side
   120,100.75x = 7,223,395,484.71
5. Step 5: Solve for x
   x = 7,223,395,484.71/120,100.75
6. Step 6: Final answer
   x = 60,144.47