Finding the Fourth Proportional to 111,474.35, 153,834.72 and 63,728.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,474.35 : 153,834.72 = 63,728.72 : x
2. Step 2: Convert to fraction form
   111,474.35/153,834.72 = 63,728.72/x
3. Step 3: Cross multiply
   111,474.35x = 153,834.72 × 63,728.72
4. Step 4: Simplify right side
   111,474.35x = 9,803,690,410.44
5. Step 5: Solve for x
   x = 9,803,690,410.44/111,474.35
6. Step 6: Final answer
   x = 87,945.70