Finding the Fourth Proportional to 115,323.74, 158,910.56 and 85,061.12

Step by Step Solution

1. Step 1: Write the proportion equation
   115,323.74 : 158,910.56 = 85,061.12 : x
2. Step 2: Convert to fraction form
   115,323.74/158,910.56 = 85,061.12/x
3. Step 3: Cross multiply
   115,323.74x = 158,910.56 × 85,061.12
4. Step 4: Simplify right side
   115,323.74x = 13,517,108,993.57
5. Step 5: Solve for x
   x = 13,517,108,993.57/115,323.74
6. Step 6: Final answer
   x = 117,210.12