Finding the Fourth Proportional to 279,826,142.04, 386,157,918.33 and 154,383,624.72

Step by Step Solution

1. Step 1: Write the proportion equation
   279,826,142.04 : 386,157,918.33 = 154,383,624.72 : x
2. Step 2: Convert to fraction form
   279,826,142.04/386,157,918.33 = 154,383,624.72/x
3. Step 3: Cross multiply
   279,826,142.04x = 386,157,918.33 × 154,383,624.72
4. Step 4: Simplify right side
   279,826,142.04x = 59,616,459,146,115,128
5. Step 5: Solve for x
   x = 59,616,459,146,115,128/279,826,142.04
6. Step 6: Final answer
   x = 213,048,211.69