Finding the Fourth Proportional to 64,433.27, 88,917.72 and 36,139.57

Step by Step Solution

1. Step 1: Write the proportion equation
   64,433.27 : 88,917.72 = 36,139.57 : x
2. Step 2: Convert to fraction form
   64,433.27/88,917.72 = 36,139.57/x
3. Step 3: Cross multiply
   64,433.27x = 88,917.72 × 36,139.57
4. Step 4: Simplify right side
   64,433.27x = 3,213,448,166.18
5. Step 5: Solve for x
   x = 3,213,448,166.18/64,433.27
6. Step 6: Final answer
   x = 49,872.50