Finding the Fourth Proportional to 121,766.38, 182,667.80 and 42,866.72

Step by Step Solution

1. Step 1: Write the proportion equation
   121,766.38 : 182,667.80 = 42,866.72 : x
2. Step 2: Convert to fraction form
   121,766.38/182,667.80 = 42,866.72/x
3. Step 3: Cross multiply
   121,766.38x = 182,667.80 × 42,866.72
4. Step 4: Simplify right side
   121,766.38x = 7,830,369,435.62
5. Step 5: Solve for x
   x = 7,830,369,435.62/121,766.38
6. Step 6: Final answer
   x = 64,306.50