Finding the Fourth Proportional to 111,410.40, 153,747 and 63,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,410.40 : 153,747 = 63,665.50 : x
2. Step 2: Convert to fraction form
   111,410.40/153,747 = 63,665.50/x
3. Step 3: Cross multiply
   111,410.40x = 153,747 × 63,665.50
4. Step 4: Simplify right side
   111,410.40x = 9,788,379,628.50
5. Step 5: Solve for x
   x = 9,788,379,628.50/111,410.40
6. Step 6: Final answer
   x = 87,858.76