Finding the Fourth Proportional to 64,422.27, 88,902.56 and 36,128.57

Step by Step Solution

1. Step 1: Write the proportion equation
   64,422.27 : 88,902.56 = 36,128.57 : x
2. Step 2: Convert to fraction form
   64,422.27/88,902.56 = 36,128.57/x
3. Step 3: Cross multiply
   64,422.27x = 88,902.56 × 36,128.57
4. Step 4: Simplify right side
   64,422.27x = 3,211,922,007.95
5. Step 5: Solve for x
   x = 3,211,922,007.95/64,422.27
6. Step 6: Final answer
   x = 49,857.32