Finding the Fourth Proportional to 305,002,404.17, 420,907,580.39 and 165,773,124.17

Step by Step Solution

1. Step 1: Write the proportion equation
   305,002,404.17 : 420,907,580.39 = 165,773,124.17 : x
2. Step 2: Convert to fraction form
   305,002,404.17/420,907,580.39 = 165,773,124.17/x
3. Step 3: Cross multiply
   305,002,404.17x = 420,907,580.39 × 165,773,124.17
4. Step 4: Simplify right side
   305,002,404.17x = 69,775,164,587,256,856
5. Step 5: Solve for x
   x = 69,775,164,587,256,856/305,002,404.17
6. Step 6: Final answer
   x = 228,769,228.15