Finding the Fourth Proportional to 418,917,215.84, 578,105,755.59 and 242,807,362.83

Step by Step Solution

1. Step 1: Write the proportion equation
   418,917,215.84 : 578,105,755.59 = 242,807,362.83 : x
2. Step 2: Convert to fraction form
   418,917,215.84/578,105,755.59 = 242,807,362.83/x
3. Step 3: Cross multiply
   418,917,215.84x = 578,105,755.59 × 242,807,362.83
4. Step 4: Simplify right side
   418,917,215.84x = 140,368,333,951,652,448
5. Step 5: Solve for x
   x = 140,368,333,951,652,448/418,917,215.84
6. Step 6: Final answer
   x = 335,074,159.39