Finding the Fourth Proportional to 76,768.27, 105,938.61 and 42,776.62

Step by Step Solution

1. Step 1: Write the proportion equation
   76,768.27 : 105,938.61 = 42,776.62 : x
2. Step 2: Convert to fraction form
   76,768.27/105,938.61 = 42,776.62/x
3. Step 3: Cross multiply
   76,768.27x = 105,938.61 × 42,776.62
4. Step 4: Simplify right side
   76,768.27x = 4,531,695,663.30
5. Step 5: Solve for x
   x = 4,531,695,663.30/76,768.27
6. Step 6: Final answer
   x = 59,030.84