Finding the Fourth Proportional to 101,968.72, 140,834.58 and 67,921.12

Step by Step Solution

1. Step 1: Write the proportion equation
   101,968.72 : 140,834.58 = 67,921.12 : x
2. Step 2: Convert to fraction form
   101,968.72/140,834.58 = 67,921.12/x
3. Step 3: Cross multiply
   101,968.72x = 140,834.58 × 67,921.12
4. Step 4: Simplify right side
   101,968.72x = 9,565,642,408.33
5. Step 5: Solve for x
   x = 9,565,642,408.33/101,968.72
6. Step 6: Final answer
   x = 93,809.58