Finding the Fourth Proportional to 105,401,078.69, 145,458,034.03 and 58,358,153.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,401,078.69 : 145,458,034.03 = 58,358,153.05 : x
2. Step 2: Convert to fraction form
   105,401,078.69/145,458,034.03 = 58,358,153.05/x
3. Step 3: Cross multiply
   105,401,078.69x = 145,458,034.03 × 58,358,153.05
4. Step 4: Simplify right side
   105,401,078.69x = 8,488,662,212,420,743
5. Step 5: Solve for x
   x = 8,488,662,212,420,743/105,401,078.69
6. Step 6: Final answer
   x = 80,536,767.92