Finding the Fourth Proportional to 76,259.56, 105,234.72 and 42,268

Step by Step Solution

1. Step 1: Write the proportion equation
   76,259.56 : 105,234.72 = 42,268 : x
2. Step 2: Convert to fraction form
   76,259.56/105,234.72 = 42,268/x
3. Step 3: Cross multiply
   76,259.56x = 105,234.72 × 42,268
4. Step 4: Simplify right side
   76,259.56x = 4,448,061,144.96
5. Step 5: Solve for x
   x = 4,448,061,144.96/76,259.56
6. Step 6: Final answer
   x = 58,327.92