Finding the Fourth Proportional to 290,061.81, 435,081.78 and 79,694.28

Step by Step Solution

1. Step 1: Write the proportion equation
   290,061.81 : 435,081.78 = 79,694.28 : x
2. Step 2: Convert to fraction form
   290,061.81/435,081.78 = 79,694.28/x
3. Step 3: Cross multiply
   290,061.81x = 435,081.78 × 79,694.28
4. Step 4: Simplify right side
   290,061.81x = 34,673,529,198.22
5. Step 5: Solve for x
   x = 34,673,529,198.22/290,061.81
6. Step 6: Final answer
   x = 119,538.42