Finding the Fourth Proportional to 111,485.96, 153,850.72 and 63,740.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,485.96 : 153,850.72 = 63,740.30 : x
2. Step 2: Convert to fraction form
   111,485.96/153,850.72 = 63,740.30/x
3. Step 3: Cross multiply
   111,485.96x = 153,850.72 × 63,740.30
4. Step 4: Simplify right side
   111,485.96x = 9,806,491,631.83
5. Step 5: Solve for x
   x = 9,806,491,631.83/111,485.96
6. Step 6: Final answer
   x = 87,961.68