Finding the Fourth Proportional to 76,198.05, 105,145.29 and 42,205.62

Step by Step Solution

1. Step 1: Write the proportion equation
   76,198.05 : 105,145.29 = 42,205.62 : x
2. Step 2: Convert to fraction form
   76,198.05/105,145.29 = 42,205.62/x
3. Step 3: Cross multiply
   76,198.05x = 105,145.29 × 42,205.62
4. Step 4: Simplify right side
   76,198.05x = 4,437,722,548.82
5. Step 5: Solve for x
   x = 4,437,722,548.82/76,198.05
6. Step 6: Final answer
   x = 58,239.32