Finding the Fourth Proportional to 21,505,111.20, 32,204,522.70 and 14,277,513.60

Step by Step Solution

1. Step 1: Write the proportion equation
   21,505,111.20 : 32,204,522.70 = 14,277,513.60 : x
2. Step 2: Convert to fraction form
   21,505,111.20/32,204,522.70 = 14,277,513.60/x
3. Step 3: Cross multiply
   21,505,111.20x = 32,204,522.70 × 14,277,513.60
4. Step 4: Simplify right side
   21,505,111.20x = 459,800,510,830,758.69
5. Step 5: Solve for x
   x = 459,800,510,830,758.69/21,505,111.20
6. Step 6: Final answer
   x = 21,380,987.36