Finding the Fourth Proportional to 111,380.82, 153,691.74 and 71,118.15

Step by Step Solution

1. Step 1: Write the proportion equation
   111,380.82 : 153,691.74 = 71,118.15 : x
2. Step 2: Convert to fraction form
   111,380.82/153,691.74 = 71,118.15/x
3. Step 3: Cross multiply
   111,380.82x = 153,691.74 × 71,118.15
4. Step 4: Simplify right side
   111,380.82x = 10,930,272,219.08
5. Step 5: Solve for x
   x = 10,930,272,219.08/111,380.82
6. Step 6: Final answer
   x = 98,134.24