Finding the Fourth Proportional to 23,139,969.99, 31,932,467.34 and 12,685,629.02

Step by Step Solution

1. Step 1: Write the proportion equation
   23,139,969.99 : 31,932,467.34 = 12,685,629.02 : x
2. Step 2: Convert to fraction form
   23,139,969.99/31,932,467.34 = 12,685,629.02/x
3. Step 3: Cross multiply
   23,139,969.99x = 31,932,467.34 × 12,685,629.02
4. Step 4: Simplify right side
   23,139,969.99x = 405,083,434,448,337.38
5. Step 5: Solve for x
   x = 405,083,434,448,337.38/23,139,969.99
6. Step 6: Final answer
   x = 17,505,789.10