Finding the Fourth Proportional to 151,673.28, 209,308.72 and 83,690.76

Step by Step Solution

1. Step 1: Write the proportion equation
   151,673.28 : 209,308.72 = 83,690.76 : x
2. Step 2: Convert to fraction form
   151,673.28/209,308.72 = 83,690.76/x
3. Step 3: Cross multiply
   151,673.28x = 209,308.72 × 83,690.76
4. Step 4: Simplify right side
   151,673.28x = 17,517,205,851.43
5. Step 5: Solve for x
   x = 17,517,205,851.43/151,673.28
6. Step 6: Final answer
   x = 115,493.02