Finding the Fourth Proportional to 143,878.72, 215,840.27 and 49,086.70

Step by Step Solution

1. Step 1: Write the proportion equation
   143,878.72 : 215,840.27 = 49,086.70 : x
2. Step 2: Convert to fraction form
   143,878.72/215,840.27 = 49,086.70/x
3. Step 3: Cross multiply
   143,878.72x = 215,840.27 × 49,086.70
4. Step 4: Simplify right side
   143,878.72x = 10,594,886,581.41
5. Step 5: Solve for x
   x = 10,594,886,581.41/143,878.72
6. Step 6: Final answer
   x = 73,637.62