Finding the Fourth Proportional to 290,003.92, 434,922.36 and 79,648.72

Step by Step Solution

1. Step 1: Write the proportion equation
   290,003.92 : 434,922.36 = 79,648.72 : x
2. Step 2: Convert to fraction form
   290,003.92/434,922.36 = 79,648.72/x
3. Step 3: Cross multiply
   290,003.92x = 434,922.36 × 79,648.72
4. Step 4: Simplify right side
   290,003.92x = 34,641,009,273.38
5. Step 5: Solve for x
   x = 34,641,009,273.38/290,003.92
6. Step 6: Final answer
   x = 119,450.14