Finding the Fourth Proportional to 279,108,212.38, 385,162,293.31 and 153,659,155.89

Step by Step Solution

1. Step 1: Write the proportion equation
   279,108,212.38 : 385,162,293.31 = 153,659,155.89 : x
2. Step 2: Convert to fraction form
   279,108,212.38/385,162,293.31 = 153,659,155.89/x
3. Step 3: Cross multiply
   279,108,212.38x = 385,162,293.31 × 153,659,155.89
4. Step 4: Simplify right side
   279,108,212.38x = 59,183,712,870,671,192
5. Step 5: Solve for x
   x = 59,183,712,870,671,192/279,108,212.38
6. Step 6: Final answer
   x = 212,045,759.48