Finding the Fourth Proportional to 121,766.39, 182,667.81 and 42,866.72

Step by Step Solution

1. Step 1: Write the proportion equation
   121,766.39 : 182,667.81 = 42,866.72 : x
2. Step 2: Convert to fraction form
   121,766.39/182,667.81 = 42,866.72/x
3. Step 3: Cross multiply
   121,766.39x = 182,667.81 × 42,866.72
4. Step 4: Simplify right side
   121,766.39x = 7,830,368,950.94
5. Step 5: Solve for x
   x = 7,830,368,950.94/121,766.39
6. Step 6: Final answer
   x = 64,306.49