Finding the Fourth Proportional to 112,018.82, 154,482.12 and 81,756.20

Step by Step Solution

1. Step 1: Write the proportion equation
   112,018.82 : 154,482.12 = 81,756.20 : x
2. Step 2: Convert to fraction form
   112,018.82/154,482.12 = 81,756.20/x
3. Step 3: Cross multiply
   112,018.82x = 154,482.12 × 81,756.20
4. Step 4: Simplify right side
   112,018.82x = 12,629,871,485.35
5. Step 5: Solve for x
   x = 12,629,871,485.35/112,018.82
6. Step 6: Final answer
   x = 112,747.77