Finding the Fourth Proportional to 143,861.78, 215,642.18 and 49,058.78

Step by Step Solution

1. Step 1: Write the proportion equation
   143,861.78 : 215,642.18 = 49,058.78 : x
2. Step 2: Convert to fraction form
   143,861.78/215,642.18 = 49,058.78/x
3. Step 3: Cross multiply
   143,861.78x = 215,642.18 × 49,058.78
4. Step 4: Simplify right side
   143,861.78x = 10,579,141,311.78
5. Step 5: Solve for x
   x = 10,579,141,311.78/143,861.78
6. Step 6: Final answer
   x = 73,536.84