Finding the Fourth Proportional to 156,719.69, 216,273.17 and 89,651.69

Step by Step Solution

1. Step 1: Write the proportion equation
   156,719.69 : 216,273.17 = 89,651.69 : x
2. Step 2: Convert to fraction form
   156,719.69/216,273.17 = 89,651.69/x
3. Step 3: Cross multiply
   156,719.69x = 216,273.17 × 89,651.69
4. Step 4: Simplify right side
   156,719.69x = 19,389,255,192.16
5. Step 5: Solve for x
   x = 19,389,255,192.16/156,719.69
6. Step 6: Final answer
   x = 123,719.33