Finding the Fourth Proportional to 76,398.24, 105,429.72 and 42,405.52

Step by Step Solution

1. Step 1: Write the proportion equation
   76,398.24 : 105,429.72 = 42,405.52 : x
2. Step 2: Convert to fraction form
   76,398.24/105,429.72 = 42,405.52/x
3. Step 3: Cross multiply
   76,398.24x = 105,429.72 × 42,405.52
4. Step 4: Simplify right side
   76,398.24x = 4,470,802,100.05
5. Step 5: Solve for x
   x = 4,470,802,100.05/76,398.24
6. Step 6: Final answer
   x = 58,519.70