Finding the Fourth Proportional to 42,017.14, 57,978.77 and 25,656.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,017.14 : 57,978.77 = 25,656.12 : x
2. Step 2: Convert to fraction form
   42,017.14/57,978.77 = 25,656.12/x
3. Step 3: Cross multiply
   42,017.14x = 57,978.77 × 25,656.12
4. Step 4: Simplify right side
   42,017.14x = 1,487,510,152.29
5. Step 5: Solve for x
   x = 1,487,510,152.29/42,017.14
6. Step 6: Final answer
   x = 35,402.46