Finding the Fourth Proportional to 772,104.96, 1,158,102.72 and 239,613.12

Step by Step Solution

1. Step 1: Write the proportion equation
   772,104.96 : 1,158,102.72 = 239,613.12 : x
2. Step 2: Convert to fraction form
   772,104.96/1,158,102.72 = 239,613.12/x
3. Step 3: Cross multiply
   772,104.96x = 1,158,102.72 × 239,613.12
4. Step 4: Simplify right side
   772,104.96x = 277,496,606,019.69
5. Step 5: Solve for x
   x = 277,496,606,019.69/772,104.96
6. Step 6: Final answer
   x = 359,402.70