Finding the Fourth Proportional to 143,727.89, 215,623.38 and 42,518.01

Step by Step Solution

1. Step 1: Write the proportion equation
   143,727.89 : 215,623.38 = 42,518.01 : x
2. Step 2: Convert to fraction form
   143,727.89/215,623.38 = 42,518.01/x
3. Step 3: Cross multiply
   143,727.89x = 215,623.38 × 42,518.01
4. Step 4: Simplify right side
   143,727.89x = 9,167,877,995.10
5. Step 5: Solve for x
   x = 9,167,877,995.10/143,727.89
6. Step 6: Final answer
   x = 63,786.36