Finding the Fourth Proportional to 153,118.69, 229,724.69 and 78,291.38

Step by Step Solution

1. Step 1: Write the proportion equation
   153,118.69 : 229,724.69 = 78,291.38 : x
2. Step 2: Convert to fraction form
   153,118.69/229,724.69 = 78,291.38/x
3. Step 3: Cross multiply
   153,118.69x = 229,724.69 × 78,291.38
4. Step 4: Simplify right side
   153,118.69x = 17,985,463,183.03
5. Step 5: Solve for x
   x = 17,985,463,183.03/153,118.69
6. Step 6: Final answer
   x = 117,460.93