Finding the Fourth Proportional to 151,646.88, 209,271.25 and 83,664.40

Step by Step Solution

1. Step 1: Write the proportion equation
   151,646.88 : 209,271.25 = 83,664.40 : x
2. Step 2: Convert to fraction form
   151,646.88/209,271.25 = 83,664.40/x
3. Step 3: Cross multiply
   151,646.88x = 209,271.25 × 83,664.40
4. Step 4: Simplify right side
   151,646.88x = 17,508,553,071.67
5. Step 5: Solve for x
   x = 17,508,553,071.67/151,646.88
6. Step 6: Final answer
   x = 115,456.07