Finding the Fourth Proportional to 42,834,655.49, 64,197,395.71 and 20,065,361.09

Step by Step Solution

1. Step 1: Write the proportion equation
   42,834,655.49 : 64,197,395.71 = 20,065,361.09 : x
2. Step 2: Convert to fraction form
   42,834,655.49/64,197,395.71 = 20,065,361.09/x
3. Step 3: Cross multiply
   42,834,655.49x = 64,197,395.71 × 20,065,361.09
4. Step 4: Simplify right side
   42,834,655.49x = 1,288,143,925,587,616.75
5. Step 5: Solve for x
   x = 1,288,143,925,587,616.75/42,834,655.49
6. Step 6: Final answer
   x = 30,072,470.78