Finding the Fourth Proportional to 131,724.72, 197,427.96 and 64,155.49

Step by Step Solution

1. Step 1: Write the proportion equation
   131,724.72 : 197,427.96 = 64,155.49 : x
2. Step 2: Convert to fraction form
   131,724.72/197,427.96 = 64,155.49/x
3. Step 3: Cross multiply
   131,724.72x = 197,427.96 × 64,155.49
4. Step 4: Simplify right side
   131,724.72x = 12,666,087,019.93
5. Step 5: Solve for x
   x = 12,666,087,019.93/131,724.72
6. Step 6: Final answer
   x = 96,155.73