Finding the Fourth Proportional to 105,049.95, 144,968.69 and 57,303.30

Step by Step Solution

1. Step 1: Write the proportion equation
   105,049.95 : 144,968.69 = 57,303.30 : x
2. Step 2: Convert to fraction form
   105,049.95/144,968.69 = 57,303.30/x
3. Step 3: Cross multiply
   105,049.95x = 144,968.69 × 57,303.30
4. Step 4: Simplify right side
   105,049.95x = 8,307,184,047.16
5. Step 5: Solve for x
   x = 8,307,184,047.16/105,049.95
6. Step 6: Final answer
   x = 79,078.42