Finding the Fourth Proportional to 143,503.84, 215,181.17 and 42,288.62

Step by Step Solution

1. Step 1: Write the proportion equation
   143,503.84 : 215,181.17 = 42,288.62 : x
2. Step 2: Convert to fraction form
   143,503.84/215,181.17 = 42,288.62/x
3. Step 3: Cross multiply
   143,503.84x = 215,181.17 × 42,288.62
4. Step 4: Simplify right side
   143,503.84x = 9,099,713,600.52
5. Step 5: Solve for x
   x = 9,099,713,600.52/143,503.84
6. Step 6: Final answer
   x = 63,410.94