Finding the Fourth Proportional to 152,108.37, 209,910.03 and 85,040.37

Step by Step Solution

1. Step 1: Write the proportion equation
   152,108.37 : 209,910.03 = 85,040.37 : x
2. Step 2: Convert to fraction form
   152,108.37/209,910.03 = 85,040.37/x
3. Step 3: Cross multiply
   152,108.37x = 209,910.03 × 85,040.37
4. Step 4: Simplify right side
   152,108.37x = 17,850,826,617.91
5. Step 5: Solve for x
   x = 17,850,826,617.91/152,108.37
6. Step 6: Final answer
   x = 117,355.98