Finding the Fourth Proportional to 104,589.30, 144,336.42 and 64,326.72

Step by Step Solution

1. Step 1: Write the proportion equation
   104,589.30 : 144,336.42 = 64,326.72 : x
2. Step 2: Convert to fraction form
   104,589.30/144,336.42 = 64,326.72/x
3. Step 3: Cross multiply
   104,589.30x = 144,336.42 × 64,326.72
4. Step 4: Simplify right side
   104,589.30x = 9,284,688,475.14
5. Step 5: Solve for x
   x = 9,284,688,475.14/104,589.30
6. Step 6: Final answer
   x = 88,772.83