Finding the Fourth Proportional to 76,288.86, 105,278.61 and 42,297.24

Step by Step Solution

1. Step 1: Write the proportion equation
   76,288.86 : 105,278.61 = 42,297.24 : x
2. Step 2: Convert to fraction form
   76,288.86/105,278.61 = 42,297.24/x
3. Step 3: Cross multiply
   76,288.86x = 105,278.61 × 42,297.24
4. Step 4: Simplify right side
   76,288.86x = 4,452,994,634.04
5. Step 5: Solve for x
   x = 4,452,994,634.04/76,288.86
6. Step 6: Final answer
   x = 58,370.18