Finding the Fourth Proportional to 114,740.50, 158,356.74 and 64,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   114,740.50 : 158,356.74 = 64,439.50 : x
2. Step 2: Convert to fraction form
   114,740.50/158,356.74 = 64,439.50/x
3. Step 3: Cross multiply
   114,740.50x = 158,356.74 × 64,439.50
4. Step 4: Simplify right side
   114,740.50x = 10,204,429,147.23
5. Step 5: Solve for x
   x = 10,204,429,147.23/114,740.50
6. Step 6: Final answer
   x = 88,934.85