Finding the Fourth Proportional to 418,994.91, 628,744.55 and 152,778.15

Step by Step Solution

1. Step 1: Write the proportion equation
   418,994.91 : 628,744.55 = 152,778.15 : x
2. Step 2: Convert to fraction form
   418,994.91/628,744.55 = 152,778.15/x
3. Step 3: Cross multiply
   418,994.91x = 628,744.55 × 152,778.15
4. Step 4: Simplify right side
   418,994.91x = 96,058,428,407.69
5. Step 5: Solve for x
   x = 96,058,428,407.69/418,994.91
6. Step 6: Final answer
   x = 229,259.18