Finding the Fourth Proportional to 21,480,384, 32,241,384.72 and 20,313,834.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,480,384 : 32,241,384.72 = 20,313,834.69 : x
2. Step 2: Convert to fraction form
   21,480,384/32,241,384.72 = 20,313,834.69/x
3. Step 3: Cross multiply
   21,480,384x = 32,241,384.72 × 20,313,834.69
4. Step 4: Simplify right side
   21,480,384x = 654,946,159,378,772
5. Step 5: Solve for x
   x = 654,946,159,378,772/21,480,384
6. Step 6: Final answer
   x = 30,490,430.68