Finding the Fourth Proportional to 436,819.76, 655,156.56 and 121,308.56

Step by Step Solution

1. Step 1: Write the proportion equation
   436,819.76 : 655,156.56 = 121,308.56 : x
2. Step 2: Convert to fraction form
   436,819.76/655,156.56 = 121,308.56/x
3. Step 3: Cross multiply
   436,819.76x = 655,156.56 × 121,308.56
4. Step 4: Simplify right side
   436,819.76x = 79,476,098,868.15
5. Step 5: Solve for x
   x = 79,476,098,868.15/436,819.76
6. Step 6: Final answer
   x = 181,942.55