Finding the Fourth Proportional to 131,259.31, 196,965.42 and 55,353.20

Step by Step Solution

1. Step 1: Write the proportion equation
   131,259.31 : 196,965.42 = 55,353.20 : x
2. Step 2: Convert to fraction form
   131,259.31/196,965.42 = 55,353.20/x
3. Step 3: Cross multiply
   131,259.31x = 196,965.42 × 55,353.20
4. Step 4: Simplify right side
   131,259.31x = 10,902,666,286.34
5. Step 5: Solve for x
   x = 10,902,666,286.34/131,259.31
6. Step 6: Final answer
   x = 83,062.04