Finding the Fourth Proportional to 42,017.64, 57,985.56 and 23,155.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,017.64 : 57,985.56 = 23,155.98 : x
2. Step 2: Convert to fraction form
   42,017.64/57,985.56 = 23,155.98/x
3. Step 3: Cross multiply
   42,017.64x = 57,985.56 × 23,155.98
4. Step 4: Simplify right side
   42,017.64x = 1,342,712,467.65
5. Step 5: Solve for x
   x = 1,342,712,467.65/42,017.64
6. Step 6: Final answer
   x = 31,955.92