Finding the Fourth Proportional to 76,308.04, 105,306.38 and 42,317.96

Step by Step Solution

1. Step 1: Write the proportion equation
   76,308.04 : 105,306.38 = 42,317.96 : x
2. Step 2: Convert to fraction form
   76,308.04/105,306.38 = 42,317.96/x
3. Step 3: Cross multiply
   76,308.04x = 105,306.38 × 42,317.96
4. Step 4: Simplify right side
   76,308.04x = 4,456,351,176.58
5. Step 5: Solve for x
   x = 4,456,351,176.58/76,308.04
6. Step 6: Final answer
   x = 58,399.50