Finding the Fourth Proportional to 131,100.70, 196,359.45 and 107,772.70

Step by Step Solution

1. Step 1: Write the proportion equation
   131,100.70 : 196,359.45 = 107,772.70 : x
2. Step 2: Convert to fraction form
   131,100.70/196,359.45 = 107,772.70/x
3. Step 3: Cross multiply
   131,100.70x = 196,359.45 × 107,772.70
4. Step 4: Simplify right side
   131,100.70x = 21,162,188,097.02
5. Step 5: Solve for x
   x = 21,162,188,097.02/131,100.70
6. Step 6: Final answer
   x = 161,419.34