Finding the Fourth Proportional to 131,162.40, 196,447.59 and 91,894.77

Step by Step Solution

1. Step 1: Write the proportion equation
   131,162.40 : 196,447.59 = 91,894.77 : x
2. Step 2: Convert to fraction form
   131,162.40/196,447.59 = 91,894.77/x
3. Step 3: Cross multiply
   131,162.40x = 196,447.59 × 91,894.77
4. Step 4: Simplify right side
   131,162.40x = 18,052,506,100.10
5. Step 5: Solve for x
   x = 18,052,506,100.10/131,162.40
6. Step 6: Final answer
   x = 137,634.76