Finding the Fourth Proportional to 104,523.12, 144,162.42 and 72,311.34

Step by Step Solution

1. Step 1: Write the proportion equation
   104,523.12 : 144,162.42 = 72,311.34 : x
2. Step 2: Convert to fraction form
   104,523.12/144,162.42 = 72,311.34/x
3. Step 3: Cross multiply
   104,523.12x = 144,162.42 × 72,311.34
4. Step 4: Simplify right side
   104,523.12x = 10,424,577,767.84
5. Step 5: Solve for x
   x = 10,424,577,767.84/104,523.12
6. Step 6: Final answer
   x = 99,734.66