Finding the Fourth Proportional to 121,768.78, 182,667.81 and 42,866.62

Step by Step Solution

1. Step 1: Write the proportion equation
   121,768.78 : 182,667.81 = 42,866.62 : x
2. Step 2: Convert to fraction form
   121,768.78/182,667.81 = 42,866.62/x
3. Step 3: Cross multiply
   121,768.78x = 182,667.81 × 42,866.62
4. Step 4: Simplify right side
   121,768.78x = 7,830,351,597.50
5. Step 5: Solve for x
   x = 7,830,351,597.50/121,768.78
6. Step 6: Final answer
   x = 64,305.08