Finding the Fourth Proportional to 76,300.27, 105,290.08 and 42,306.73

Step by Step Solution

1. Step 1: Write the proportion equation
   76,300.27 : 105,290.08 = 42,306.73 : x
2. Step 2: Convert to fraction form
   76,300.27/105,290.08 = 42,306.73/x
3. Step 3: Cross multiply
   76,300.27x = 105,290.08 × 42,306.73
4. Step 4: Simplify right side
   76,300.27x = 4,454,478,617.25
5. Step 5: Solve for x
   x = 4,454,478,617.25/76,300.27
6. Step 6: Final answer
   x = 58,380.90