Finding the Fourth Proportional to 76,306.35, 105,300.81 and 42,314.30

Step by Step Solution

1. Step 1: Write the proportion equation
   76,306.35 : 105,300.81 = 42,314.30 : x
2. Step 2: Convert to fraction form
   76,306.35/105,300.81 = 42,314.30/x
3. Step 3: Cross multiply
   76,306.35x = 105,300.81 × 42,314.30
4. Step 4: Simplify right side
   76,306.35x = 4,455,729,932.96
5. Step 5: Solve for x
   x = 4,455,729,932.96/76,306.35
6. Step 6: Final answer
   x = 58,392.65