Finding the Fourth Proportional to 131,721.30, 197,679.15 and 52,892.10

Step by Step Solution

1. Step 1: Write the proportion equation
   131,721.30 : 197,679.15 = 52,892.10 : x
2. Step 2: Convert to fraction form
   131,721.30/197,679.15 = 52,892.10/x
3. Step 3: Cross multiply
   131,721.30x = 197,679.15 × 52,892.10
4. Step 4: Simplify right side
   131,721.30x = 10,455,665,369.72
5. Step 5: Solve for x
   x = 10,455,665,369.72/131,721.30
6. Step 6: Final answer
   x = 79,377.18