Finding the Fourth Proportional to 76,317,976.47, 105,309,242.05 and 51,591,961.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,317,976.47 : 105,309,242.05 = 51,591,961.83 : x
2. Step 2: Convert to fraction form
   76,317,976.47/105,309,242.05 = 51,591,961.83/x
3. Step 3: Cross multiply
   76,317,976.47x = 105,309,242.05 × 51,591,961.83
4. Step 4: Simplify right side
   76,317,976.47x = 5,433,110,396,189,831
5. Step 5: Solve for x
   x = 5,433,110,396,189,831/76,317,976.47
6. Step 6: Final answer
   x = 71,190,440.94