Finding the Fourth Proportional to 131,693.04, 197,560.62 and 42,939.72

Step by Step Solution

1. Step 1: Write the proportion equation
   131,693.04 : 197,560.62 = 42,939.72 : x
2. Step 2: Convert to fraction form
   131,693.04/197,560.62 = 42,939.72/x
3. Step 3: Cross multiply
   131,693.04x = 197,560.62 × 42,939.72
4. Step 4: Simplify right side
   131,693.04x = 8,483,197,705.83
5. Step 5: Solve for x
   x = 8,483,197,705.83/131,693.04
6. Step 6: Final answer
   x = 64,416.45