Finding the Fourth Proportional to 91,728.71, 137,578.30 and 25,153.39

Step by Step Solution

1. Step 1: Write the proportion equation
   91,728.71 : 137,578.30 = 25,153.39 : x
2. Step 2: Convert to fraction form
   91,728.71/137,578.30 = 25,153.39/x
3. Step 3: Cross multiply
   91,728.71x = 137,578.30 × 25,153.39
4. Step 4: Simplify right side
   91,728.71x = 3,460,559,821.78
5. Step 5: Solve for x
   x = 3,460,559,821.78/91,728.71
6. Step 6: Final answer
   x = 37,726.03