Finding the Fourth Proportional to 76,393.86, 105,424.65 and 42,404.54

Step by Step Solution

1. Step 1: Write the proportion equation
   76,393.86 : 105,424.65 = 42,404.54 : x
2. Step 2: Convert to fraction form
   76,393.86/105,424.65 = 42,404.54/x
3. Step 3: Cross multiply
   76,393.86x = 105,424.65 × 42,404.54
4. Step 4: Simplify right side
   76,393.86x = 4,470,483,260.79
5. Step 5: Solve for x
   x = 4,470,483,260.79/76,393.86
6. Step 6: Final answer
   x = 58,518.88