Finding the Fourth Proportional to 156,850.56, 216,466.56 and 89,786.88

Step by Step Solution

1. Step 1: Write the proportion equation
   156,850.56 : 216,466.56 = 89,786.88 : x
2. Step 2: Convert to fraction form
   156,850.56/216,466.56 = 89,786.88/x
3. Step 3: Cross multiply
   156,850.56x = 216,466.56 × 89,786.88
4. Step 4: Simplify right side
   156,850.56x = 19,435,857,046.73
5. Step 5: Solve for x
   x = 19,435,857,046.73/156,850.56
6. Step 6: Final answer
   x = 123,913.21