Finding the Fourth Proportional to 121,095.78, 181,667.61 and 42,212.58

Step by Step Solution

1. Step 1: Write the proportion equation
   121,095.78 : 181,667.61 = 42,212.58 : x
2. Step 2: Convert to fraction form
   121,095.78/181,667.61 = 42,212.58/x
3. Step 3: Cross multiply
   121,095.78x = 181,667.61 × 42,212.58
4. Step 4: Simplify right side
   121,095.78x = 7,668,658,520.53
5. Step 5: Solve for x
   x = 7,668,658,520.53/121,095.78
6. Step 6: Final answer
   x = 63,327.22