Finding the Fourth Proportional to 120,960.69, 181,445.13 and 42,075.60

Step by Step Solution

1. Step 1: Write the proportion equation
   120,960.69 : 181,445.13 = 42,075.60 : x
2. Step 2: Convert to fraction form
   120,960.69/181,445.13 = 42,075.60/x
3. Step 3: Cross multiply
   120,960.69x = 181,445.13 × 42,075.60
4. Step 4: Simplify right side
   120,960.69x = 7,634,412,711.83
5. Step 5: Solve for x
   x = 7,634,412,711.83/120,960.69
6. Step 6: Final answer
   x = 63,114.82