Finding the Fourth Proportional to 113,216.07, 156,198.35 and 67,908.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,216.07 : 156,198.35 = 67,908.72 : x
2. Step 2: Convert to fraction form
   113,216.07/156,198.35 = 67,908.72/x
3. Step 3: Cross multiply
   113,216.07x = 156,198.35 × 67,908.72
4. Step 4: Simplify right side
   113,216.07x = 10,607,229,675.07
5. Step 5: Solve for x
   x = 10,607,229,675.07/113,216.07
6. Step 6: Final answer
   x = 93,690.14