Finding the Fourth Proportional to 121,323.30, 181,952.55 and 42,429.30

Step by Step Solution

1. Step 1: Write the proportion equation
   121,323.30 : 181,952.55 = 42,429.30 : x
2. Step 2: Convert to fraction form
   121,323.30/181,952.55 = 42,429.30/x
3. Step 3: Cross multiply
   121,323.30x = 181,952.55 × 42,429.30
4. Step 4: Simplify right side
   121,323.30x = 7,720,119,329.72
5. Step 5: Solve for x
   x = 7,720,119,329.72/121,323.30
6. Step 6: Final answer
   x = 63,632.62