Finding the Fourth Proportional to 23,139,971.98, 31,932,470.08 and 12,685,631.01

Step by Step Solution

1. Step 1: Write the proportion equation
   23,139,971.98 : 31,932,470.08 = 12,685,631.01 : x
2. Step 2: Convert to fraction form
   23,139,971.98/31,932,470.08 = 12,685,631.01/x
3. Step 3: Cross multiply
   23,139,971.98x = 31,932,470.08 × 12,685,631.01
4. Step 4: Simplify right side
   23,139,971.98x = 405,083,532,784,160.31
5. Step 5: Solve for x
   x = 405,083,532,784,160.31/23,139,971.98
6. Step 6: Final answer
   x = 17,505,791.84