Finding the Fourth Proportional to 76,245.75, 105,210.57 and 42,245.73

Step by Step Solution

1. Step 1: Write the proportion equation
   76,245.75 : 105,210.57 = 42,245.73 : x
2. Step 2: Convert to fraction form
   76,245.75/105,210.57 = 42,245.73/x
3. Step 3: Cross multiply
   76,245.75x = 105,210.57 × 42,245.73
4. Step 4: Simplify right side
   76,245.75x = 4,444,697,333.37
5. Step 5: Solve for x
   x = 4,444,697,333.37/76,245.75
6. Step 6: Final answer
   x = 58,294.36