Finding the Fourth Proportional to 43,188,634.17, 64,783,074.24 and 12,485,712.96

Step by Step Solution

1. Step 1: Write the proportion equation
   43,188,634.17 : 64,783,074.24 = 12,485,712.96 : x
2. Step 2: Convert to fraction form
   43,188,634.17/64,783,074.24 = 12,485,712.96/x
3. Step 3: Cross multiply
   43,188,634.17x = 64,783,074.24 × 12,485,712.96
4. Step 4: Simplify right side
   43,188,634.17x = 808,862,869,627,010.25
5. Step 5: Solve for x
   x = 808,862,869,627,010.25/43,188,634.17
6. Step 6: Final answer
   x = 18,728,604.99