Finding the Fourth Proportional to 78,441.02, 108,249.29 and 42,631.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,441.02 : 108,249.29 = 42,631.02 : x
2. Step 2: Convert to fraction form
   78,441.02/108,249.29 = 42,631.02/x
3. Step 3: Cross multiply
   78,441.02x = 108,249.29 × 42,631.02
4. Step 4: Simplify right side
   78,441.02x = 4,614,777,433.82
5. Step 5: Solve for x
   x = 4,614,777,433.82/78,441.02
6. Step 6: Final answer
   x = 58,831.18