Finding the Fourth Proportional to 18,563,128,681.86, 25,617,120,344.46 and 10,105,016,669.10

Step by Step Solution

1. Step 1: Write the proportion equation
   18,563,128,681.86 : 25,617,120,344.46 = 10,105,016,669.10 : x
2. Step 2: Convert to fraction form
   18,563,128,681.86/25,617,120,344.46 = 10,105,016,669.10/x
3. Step 3: Cross multiply
   18,563,128,681.86x = 25,617,120,344.46 × 10,105,016,669.10
4. Step 4: Simplify right side
   18,563,128,681.86x = 258,861,428,095,109,038,080
5. Step 5: Solve for x
   x = 258,861,428,095,109,038,080/18,563,128,681.86
6. Step 6: Final answer
   x = 13,944,924,507.69