Finding the Fourth Proportional to 23,128,731.29, 31,917,686.69 and 12,673,086.14

Step by Step Solution

1. Step 1: Write the proportion equation
   23,128,731.29 : 31,917,686.69 = 12,673,086.14 : x
2. Step 2: Convert to fraction form
   23,128,731.29/31,917,686.69 = 12,673,086.14/x
3. Step 3: Cross multiply
   23,128,731.29x = 31,917,686.69 × 12,673,086.14
4. Step 4: Simplify right side
   23,128,731.29x = 404,495,592,828,330.25
5. Step 5: Solve for x
   x = 404,495,592,828,330.25/23,128,731.29
6. Step 6: Final answer
   x = 17,488,879.43