Finding the Fourth Proportional to 151,672.38, 209,307.68 and 83,689.33

Step by Step Solution

1. Step 1: Write the proportion equation
   151,672.38 : 209,307.68 = 83,689.33 : x
2. Step 2: Convert to fraction form
   151,672.38/209,307.68 = 83,689.33/x
3. Step 3: Cross multiply
   151,672.38x = 209,307.68 × 83,689.33
4. Step 4: Simplify right side
   151,672.38x = 17,516,818,038.07
5. Step 5: Solve for x
   x = 17,516,818,038.07/151,672.38
6. Step 6: Final answer
   x = 115,491.16