Finding the Fourth Proportional to 115,887.01, 159,940.28 and 83,725.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,887.01 : 159,940.28 = 83,725.72 : x
2. Step 2: Convert to fraction form
   115,887.01/159,940.28 = 83,725.72/x
3. Step 3: Cross multiply
   115,887.01x = 159,940.28 × 83,725.72
4. Step 4: Simplify right side
   115,887.01x = 13,391,115,100.00
5. Step 5: Solve for x
   x = 13,391,115,100.00/115,887.01
6. Step 6: Final answer
   x = 115,553.20