Finding the Fourth Proportional to 76,774.56, 105,952.15 and 42,783.09

Step by Step Solution

1. Step 1: Write the proportion equation
   76,774.56 : 105,952.15 = 42,783.09 : x
2. Step 2: Convert to fraction form
   76,774.56/105,952.15 = 42,783.09/x
3. Step 3: Cross multiply
   76,774.56x = 105,952.15 × 42,783.09
4. Step 4: Simplify right side
   76,774.56x = 4,532,960,369.14
5. Step 5: Solve for x
   x = 4,532,960,369.14/76,774.56
6. Step 6: Final answer
   x = 59,042.48