Finding the Fourth Proportional to 311,404.19, 429,648.89 and 175,390.61

Step by Step Solution

1. Step 1: Write the proportion equation
   311,404.19 : 429,648.89 = 175,390.61 : x
2. Step 2: Convert to fraction form
   311,404.19/429,648.89 = 175,390.61/x
3. Step 3: Cross multiply
   311,404.19x = 429,648.89 × 175,390.61
4. Step 4: Simplify right side
   311,404.19x = 75,356,377,877.73
5. Step 5: Solve for x
   x = 75,356,377,877.73/311,404.19
6. Step 6: Final answer
   x = 241,988.97