Finding the Fourth Proportional to 143,502.94, 215,179.96 and 42,287.89

Step by Step Solution

1. Step 1: Write the proportion equation
   143,502.94 : 215,179.96 = 42,287.89 : x
2. Step 2: Convert to fraction form
   143,502.94/215,179.96 = 42,287.89/x
3. Step 3: Cross multiply
   143,502.94x = 215,179.96 × 42,287.89
4. Step 4: Simplify right side
   143,502.94x = 9,099,507,274.10
5. Step 5: Solve for x
   x = 9,099,507,274.10/143,502.94
6. Step 6: Final answer
   x = 63,409.90