Finding the Fourth Proportional to 25,656,196.69, 35,392,128.20 and 15,863,510.53

Step by Step Solution

1. Step 1: Write the proportion equation
   25,656,196.69 : 35,392,128.20 = 15,863,510.53 : x
2. Step 2: Convert to fraction form
   25,656,196.69/35,392,128.20 = 15,863,510.53/x
3. Step 3: Cross multiply
   25,656,196.69x = 35,392,128.20 × 15,863,510.53
4. Step 4: Simplify right side
   25,656,196.69x = 561,443,398,202,849.38
5. Step 5: Solve for x
   x = 561,443,398,202,849.38/25,656,196.69
6. Step 6: Final answer
   x = 21,883,344.80