Finding the Fourth Proportional to 111,147.30, 153,380.25 and 63,399.63

Step by Step Solution

1. Step 1: Write the proportion equation
   111,147.30 : 153,380.25 = 63,399.63 : x
2. Step 2: Convert to fraction form
   111,147.30/153,380.25 = 63,399.63/x
3. Step 3: Cross multiply
   111,147.30x = 153,380.25 × 63,399.63
4. Step 4: Simplify right side
   111,147.30x = 9,724,251,099.31
5. Step 5: Solve for x
   x = 9,724,251,099.31/111,147.30
6. Step 6: Final answer
   x = 87,489.76