Finding the Fourth Proportional to 156,982.07, 216,630.72 and 89,005.38

Step by Step Solution

1. Step 1: Write the proportion equation
   156,982.07 : 216,630.72 = 89,005.38 : x
2. Step 2: Convert to fraction form
   156,982.07/216,630.72 = 89,005.38/x
3. Step 3: Cross multiply
   156,982.07x = 216,630.72 × 89,005.38
4. Step 4: Simplify right side
   156,982.07x = 19,281,299,553.27
5. Step 5: Solve for x
   x = 19,281,299,553.27/156,982.07
6. Step 6: Final answer
   x = 122,824.86