Finding the Fourth Proportional to 143,627.99, 215,465.33 and 42,436.31

Step by Step Solution

1. Step 1: Write the proportion equation
   143,627.99 : 215,465.33 = 42,436.31 : x
2. Step 2: Convert to fraction form
   143,627.99/215,465.33 = 42,436.31/x
3. Step 3: Cross multiply
   143,627.99x = 215,465.33 × 42,436.31
4. Step 4: Simplify right side
   143,627.99x = 9,143,552,566.90
5. Step 5: Solve for x
   x = 9,143,552,566.90/143,627.99
6. Step 6: Final answer
   x = 63,661.36