Finding the Fourth Proportional to 76,393.29, 105,420.72 and 42,401.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,393.29 : 105,420.72 = 42,401.69 : x
2. Step 2: Convert to fraction form
   76,393.29/105,420.72 = 42,401.69/x
3. Step 3: Cross multiply
   76,393.29x = 105,420.72 × 42,401.69
4. Step 4: Simplify right side
   76,393.29x = 4,470,016,716.25
5. Step 5: Solve for x
   x = 4,470,016,716.25/76,393.29
6. Step 6: Final answer
   x = 58,513.21