Finding the Fourth Proportional to 131,686.37, 197,561.00 and 42,939.96

Step by Step Solution

1. Step 1: Write the proportion equation
   131,686.37 : 197,561.00 = 42,939.96 : x
2. Step 2: Convert to fraction form
   131,686.37/197,561.00 = 42,939.96/x
3. Step 3: Cross multiply
   131,686.37x = 197,561.00 × 42,939.96
4. Step 4: Simplify right side
   131,686.37x = 8,483,261,222.86
5. Step 5: Solve for x
   x = 8,483,261,222.86/131,686.37
6. Step 6: Final answer
   x = 64,420.19