Finding the Fourth Proportional to 93,015, 128,698.74 and 81,103.14

Step by Step Solution

1. Step 1: Write the proportion equation
   93,015 : 128,698.74 = 81,103.14 : x
2. Step 2: Convert to fraction form
   93,015/128,698.74 = 81,103.14/x
3. Step 3: Cross multiply
   93,015x = 128,698.74 × 81,103.14
4. Step 4: Simplify right side
   93,015x = 10,437,871,928.04
5. Step 5: Solve for x
   x = 10,437,871,928.04/93,015
6. Step 6: Final answer
   x = 112,217.08