Finding the Fourth Proportional to 131,216, 181,078.72 and 71,600

Step by Step Solution

1. Step 1: Write the proportion equation
   131,216 : 181,078.72 = 71,600 : x
2. Step 2: Convert to fraction form
   131,216/181,078.72 = 71,600/x
3. Step 3: Cross multiply
   131,216x = 181,078.72 × 71,600
4. Step 4: Simplify right side
   131,216x = 12,965,236,352
5. Step 5: Solve for x
   x = 12,965,236,352/131,216
6. Step 6: Final answer
   x = 98,808.35