Finding the Fourth Proportional to 76,544.21, 105,632.78 and 42,551.39

Step by Step Solution

1. Step 1: Write the proportion equation
   76,544.21 : 105,632.78 = 42,551.39 : x
2. Step 2: Convert to fraction form
   76,544.21/105,632.78 = 42,551.39/x
3. Step 3: Cross multiply
   76,544.21x = 105,632.78 × 42,551.39
4. Step 4: Simplify right side
   76,544.21x = 4,494,821,669.89
5. Step 5: Solve for x
   x = 4,494,821,669.89/76,544.21
6. Step 6: Final answer
   x = 58,721.90