Finding the Fourth Proportional to 290,048.72, 435,119.16 and 123,838.16

Step by Step Solution

1. Step 1: Write the proportion equation
   290,048.72 : 435,119.16 = 123,838.16 : x
2. Step 2: Convert to fraction form
   290,048.72/435,119.16 = 123,838.16/x
3. Step 3: Cross multiply
   290,048.72x = 435,119.16 × 123,838.16
4. Step 4: Simplify right side
   290,048.72x = 53,884,356,155.15
5. Step 5: Solve for x
   x = 53,884,356,155.15/290,048.72
6. Step 6: Final answer
   x = 185,776.91