Finding the Fourth Proportional to 42,405.09, 58,513.23 and 25,405.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42,405.09 : 58,513.23 = 25,405.53 : x
2. Step 2: Convert to fraction form
   42,405.09/58,513.23 = 25,405.53/x
3. Step 3: Cross multiply
   42,405.09x = 58,513.23 × 25,405.53
4. Step 4: Simplify right side
   42,405.09x = 1,486,559,620.16
5. Step 5: Solve for x
   x = 1,486,559,620.16/42,405.09
6. Step 6: Final answer
   x = 35,056.16