Finding the Fourth Proportional to 289,387.69, 434,111.60 and 79,025.63

Step by Step Solution

1. Step 1: Write the proportion equation
   289,387.69 : 434,111.60 = 79,025.63 : x
2. Step 2: Convert to fraction form
   289,387.69/434,111.60 = 79,025.63/x
3. Step 3: Cross multiply
   289,387.69x = 434,111.60 × 79,025.63
4. Step 4: Simplify right side
   289,387.69x = 34,305,940,707.31
5. Step 5: Solve for x
   x = 34,305,940,707.31/289,387.69
6. Step 6: Final answer
   x = 118,546.65