Finding the Fourth Proportional to 156,884, 216,500.24 and 86,228

Step by Step Solution

1. Step 1: Write the proportion equation
   156,884 : 216,500.24 = 86,228 : x
2. Step 2: Convert to fraction form
   156,884/216,500.24 = 86,228/x
3. Step 3: Cross multiply
   156,884x = 216,500.24 × 86,228
4. Step 4: Simplify right side
   156,884x = 18,668,382,694.72
5. Step 5: Solve for x
   x = 18,668,382,694.72/156,884
6. Step 6: Final answer
   x = 118,994.82