Finding the Fourth Proportional to 88,665, 133,022.50 and 36,112.20

Step by Step Solution

1. Step 1: Write the proportion equation
   88,665 : 133,022.50 = 36,112.20 : x
2. Step 2: Convert to fraction form
   88,665/133,022.50 = 36,112.20/x
3. Step 3: Cross multiply
   88,665x = 133,022.50 × 36,112.20
4. Step 4: Simplify right side
   88,665x = 4,803,735,124.50
5. Step 5: Solve for x
   x = 4,803,735,124.50/88,665
6. Step 6: Final answer
   x = 54,178.48