Finding the Fourth Proportional to 112,019.56, 154,501.62 and 76,149.12

Step by Step Solution

1. Step 1: Write the proportion equation
   112,019.56 : 154,501.62 = 76,149.12 : x
2. Step 2: Convert to fraction form
   112,019.56/154,501.62 = 76,149.12/x
3. Step 3: Cross multiply
   112,019.56x = 154,501.62 × 76,149.12
4. Step 4: Simplify right side
   112,019.56x = 11,765,162,401.57
5. Step 5: Solve for x
   x = 11,765,162,401.57/112,019.56
6. Step 6: Final answer
   x = 105,027.75