Finding the Fourth Proportional to 131,059.31, 196,589.16 and 56,173.59

Step by Step Solution

1. Step 1: Write the proportion equation
   131,059.31 : 196,589.16 = 56,173.59 : x
2. Step 2: Convert to fraction form
   131,059.31/196,589.16 = 56,173.59/x
3. Step 3: Cross multiply
   131,059.31x = 196,589.16 × 56,173.59
4. Step 4: Simplify right side
   131,059.31x = 11,043,118,872.28
5. Step 5: Solve for x
   x = 11,043,118,872.28/131,059.31
6. Step 6: Final answer
   x = 84,260.47