Finding the Fourth Proportional to 76,839.49, 106,034.43 and 42,851.49

Step by Step Solution

1. Step 1: Write the proportion equation
   76,839.49 : 106,034.43 = 42,851.49 : x
2. Step 2: Convert to fraction form
   76,839.49/106,034.43 = 42,851.49/x
3. Step 3: Cross multiply
   76,839.49x = 106,034.43 × 42,851.49
4. Step 4: Simplify right side
   76,839.49x = 4,543,733,316.80
5. Step 5: Solve for x
   x = 4,543,733,316.80/76,839.49
6. Step 6: Final answer
   x = 59,132.79