Finding the Fourth Proportional to 111,396.06, 153,782.55 and 72,651.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,396.06 : 153,782.55 = 72,651.42 : x
2. Step 2: Convert to fraction form
   111,396.06/153,782.55 = 72,651.42/x
3. Step 3: Cross multiply
   111,396.06x = 153,782.55 × 72,651.42
4. Step 4: Simplify right side
   111,396.06x = 11,172,520,628.72
5. Step 5: Solve for x
   x = 11,172,520,628.72/111,396.06
6. Step 6: Final answer
   x = 100,295.47