Finding the Fourth Proportional to 85,536, 128,362.32 and 30,132

Step by Step Solution

1. Step 1: Write the proportion equation
   85,536 : 128,362.32 = 30,132 : x
2. Step 2: Convert to fraction form
   85,536/128,362.32 = 30,132/x
3. Step 3: Cross multiply
   85,536x = 128,362.32 × 30,132
4. Step 4: Simplify right side
   85,536x = 3,867,813,426.24
5. Step 5: Solve for x
   x = 3,867,813,426.24/85,536
6. Step 6: Final answer
   x = 45,218.54