Finding the Fourth Proportional to 114,709, 158,229.78 and 72,193.72

Step by Step Solution

1. Step 1: Write the proportion equation
   114,709 : 158,229.78 = 72,193.72 : x
2. Step 2: Convert to fraction form
   114,709/158,229.78 = 72,193.72/x
3. Step 3: Cross multiply
   114,709x = 158,229.78 × 72,193.72
4. Step 4: Simplify right side
   114,709x = 11,423,196,432.98
5. Step 5: Solve for x
   x = 11,423,196,432.98/114,709
6. Step 6: Final answer
   x = 99,584.13