Finding the Fourth Proportional to 114,941.36, 158,618.04 and 64,640.72

Step by Step Solution

1. Step 1: Write the proportion equation
   114,941.36 : 158,618.04 = 64,640.72 : x
2. Step 2: Convert to fraction form
   114,941.36/158,618.04 = 64,640.72/x
3. Step 3: Cross multiply
   114,941.36x = 158,618.04 × 64,640.72
4. Step 4: Simplify right side
   114,941.36x = 10,253,184,310.59
5. Step 5: Solve for x
   x = 10,253,184,310.59/114,941.36
6. Step 6: Final answer
   x = 89,203.61