Finding the Fourth Proportional to 151,689.96, 209,330.46 and 83,707.47

Step by Step Solution

1. Step 1: Write the proportion equation
   151,689.96 : 209,330.46 = 83,707.47 : x
2. Step 2: Convert to fraction form
   151,689.96/209,330.46 = 83,707.47/x
3. Step 3: Cross multiply
   151,689.96x = 209,330.46 × 83,707.47
4. Step 4: Simplify right side
   151,689.96x = 17,522,523,200.54
5. Step 5: Solve for x
   x = 17,522,523,200.54/151,689.96
6. Step 6: Final answer
   x = 115,515.38