Finding the Fourth Proportional to 76,185.68, 105,121.32 and 42,192.52

Step by Step Solution

1. Step 1: Write the proportion equation
   76,185.68 : 105,121.32 = 42,192.52 : x
2. Step 2: Convert to fraction form
   76,185.68/105,121.32 = 42,192.52/x
3. Step 3: Cross multiply
   76,185.68x = 105,121.32 × 42,192.52
4. Step 4: Simplify right side
   76,185.68x = 4,435,333,396.53
5. Step 5: Solve for x
   x = 4,435,333,396.53/76,185.68
6. Step 6: Final answer
   x = 58,217.42