Finding the Fourth Proportional to 42,135.37, 58,146.47 and 23,015.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,135.37 : 58,146.47 = 23,015.15 : x
2. Step 2: Convert to fraction form
   42,135.37/58,146.47 = 23,015.15/x
3. Step 3: Cross multiply
   42,135.37x = 58,146.47 × 23,015.15
4. Step 4: Simplify right side
   42,135.37x = 1,338,249,759.31
5. Step 5: Solve for x
   x = 1,338,249,759.31/42,135.37
6. Step 6: Final answer
   x = 31,760.72