Finding the Fourth Proportional to 78,441.84, 108,249.69 and 42,631.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,441.84 : 108,249.69 = 42,631.86 : x
2. Step 2: Convert to fraction form
   78,441.84/108,249.69 = 42,631.86/x
3. Step 3: Cross multiply
   78,441.84x = 108,249.69 × 42,631.86
4. Step 4: Simplify right side
   78,441.84x = 4,614,885,629.12
5. Step 5: Solve for x
   x = 4,614,885,629.12/78,441.84
6. Step 6: Final answer
   x = 58,831.94