Finding the Fourth Proportional to 42,585,791.13, 64,012,039.76 and 28,105,772.27

Step by Step Solution

1. Step 1: Write the proportion equation
   42,585,791.13 : 64,012,039.76 = 28,105,772.27 : x
2. Step 2: Convert to fraction form
   42,585,791.13/64,012,039.76 = 28,105,772.27/x
3. Step 3: Cross multiply
   42,585,791.13x = 64,012,039.76 × 28,105,772.27
4. Step 4: Simplify right side
   42,585,791.13x = 1,799,107,811,782,949.75
5. Step 5: Solve for x
   x = 1,799,107,811,782,949.75/42,585,791.13
6. Step 6: Final answer
   x = 42,246,668.76