Finding the Fourth Proportional to 76,404.28, 105,433 and 42,413.44

Step by Step Solution

1. Step 1: Write the proportion equation
   76,404.28 : 105,433 = 42,413.44 : x
2. Step 2: Convert to fraction form
   76,404.28/105,433 = 42,413.44/x
3. Step 3: Cross multiply
   76,404.28x = 105,433 × 42,413.44
4. Step 4: Simplify right side
   76,404.28x = 4,471,776,219.52
5. Step 5: Solve for x
   x = 4,471,776,219.52/76,404.28
6. Step 6: Final answer
   x = 58,527.82