Finding the Fourth Proportional to 470,338,162.56, 705,461,655.96 and 142,816,554.61

Step by Step Solution

1. Step 1: Write the proportion equation
   470,338,162.56 : 705,461,655.96 = 142,816,554.61 : x
2. Step 2: Convert to fraction form
   470,338,162.56/705,461,655.96 = 142,816,554.61/x
3. Step 3: Cross multiply
   470,338,162.56x = 705,461,655.96 × 142,816,554.61
4. Step 4: Simplify right side
   470,338,162.56x = 100,751,603,113,672,384
5. Step 5: Solve for x
   x = 100,751,603,113,672,384/470,338,162.56
6. Step 6: Final answer
   x = 214,210,989.31