Finding the Fourth Proportional to 131,139.84, 196,664.32 and 51,159.04

Step by Step Solution

1. Step 1: Write the proportion equation
   131,139.84 : 196,664.32 = 51,159.04 : x
2. Step 2: Convert to fraction form
   131,139.84/196,664.32 = 51,159.04/x
3. Step 3: Cross multiply
   131,139.84x = 196,664.32 × 51,159.04
4. Step 4: Simplify right side
   131,139.84x = 10,061,157,813.45
5. Step 5: Solve for x
   x = 10,061,157,813.45/131,139.84
6. Step 6: Final answer
   x = 76,720.83