Finding the Fourth Proportional to 42,089.84, 62,789.78 and 40,945.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,089.84 : 62,789.78 = 40,945.76 : x
2. Step 2: Convert to fraction form
   42,089.84/62,789.78 = 40,945.76/x
3. Step 3: Cross multiply
   42,089.84x = 62,789.78 × 40,945.76
4. Step 4: Simplify right side
   42,089.84x = 2,570,975,262.33
5. Step 5: Solve for x
   x = 2,570,975,262.33/42,089.84
6. Step 6: Final answer
   x = 61,083.04