Finding the Fourth Proportional to 42,012.98, 57,978.09 and 23,150.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.98 : 57,978.09 = 23,150.12 : x
2. Step 2: Convert to fraction form
   42,012.98/57,978.09 = 23,150.12/x
3. Step 3: Cross multiply
   42,012.98x = 57,978.09 × 23,150.12
4. Step 4: Simplify right side
   42,012.98x = 1,342,199,740.87
5. Step 5: Solve for x
   x = 1,342,199,740.87/42,012.98
6. Step 6: Final answer
   x = 31,947.26