Finding the Fourth Proportional to 143,629.98, 215,468.34 and 42,438.30

Step by Step Solution

1. Step 1: Write the proportion equation
   143,629.98 : 215,468.34 = 42,438.30 : x
2. Step 2: Convert to fraction form
   143,629.98/215,468.34 = 42,438.30/x
3. Step 3: Cross multiply
   143,629.98x = 215,468.34 × 42,438.30
4. Step 4: Simplify right side
   143,629.98x = 9,144,110,053.42
5. Step 5: Solve for x
   x = 9,144,110,053.42/143,629.98
6. Step 6: Final answer
   x = 63,664.36