Finding the Fourth Proportional to 131,081.49, 196,388.96 and 55,012.77

Step by Step Solution

1. Step 1: Write the proportion equation
   131,081.49 : 196,388.96 = 55,012.77 : x
2. Step 2: Convert to fraction form
   131,081.49/196,388.96 = 55,012.77/x
3. Step 3: Cross multiply
   131,081.49x = 196,388.96 × 55,012.77
4. Step 4: Simplify right side
   131,081.49x = 10,803,900,411.96
5. Step 5: Solve for x
   x = 10,803,900,411.96/131,081.49
6. Step 6: Final answer
   x = 82,421.25