Finding the Fourth Proportional to 115,196.56, 158,991.60 and 91,504.06

Step by Step Solution

1. Step 1: Write the proportion equation
   115,196.56 : 158,991.60 = 91,504.06 : x
2. Step 2: Convert to fraction form
   115,196.56/158,991.60 = 91,504.06/x
3. Step 3: Cross multiply
   115,196.56x = 158,991.60 × 91,504.06
4. Step 4: Simplify right side
   115,196.56x = 14,548,376,905.90
5. Step 5: Solve for x
   x = 14,548,376,905.90/115,196.56
6. Step 6: Final answer
   x = 126,291.77