Finding the Fourth Proportional to 76,349, 105,361.62 and 42,815

Step by Step Solution

1. Step 1: Write the proportion equation
   76,349 : 105,361.62 = 42,815 : x
2. Step 2: Convert to fraction form
   76,349/105,361.62 = 42,815/x
3. Step 3: Cross multiply
   76,349x = 105,361.62 × 42,815
4. Step 4: Simplify right side
   76,349x = 4,511,057,760.30
5. Step 5: Solve for x
   x = 4,511,057,760.30/76,349
6. Step 6: Final answer
   x = 59,084.70