Finding the Fourth Proportional to 76,145.75, 105,066.56 and 49,284.53

Step by Step Solution

1. Step 1: Write the proportion equation
   76,145.75 : 105,066.56 = 49,284.53 : x
2. Step 2: Convert to fraction form
   76,145.75/105,066.56 = 49,284.53/x
3. Step 3: Cross multiply
   76,145.75x = 105,066.56 × 49,284.53
4. Step 4: Simplify right side
   76,145.75x = 5,178,155,781.89
5. Step 5: Solve for x
   x = 5,178,155,781.89/76,145.75
6. Step 6: Final answer
   x = 68,003.21