Finding the Fourth Proportional to 45,768.72, 63,128.26 and 42,004.04

Step by Step Solution

1. Step 1: Write the proportion equation
   45,768.72 : 63,128.26 = 42,004.04 : x
2. Step 2: Convert to fraction form
   45,768.72/63,128.26 = 42,004.04/x
3. Step 3: Cross multiply
   45,768.72x = 63,128.26 × 42,004.04
4. Step 4: Simplify right side
   45,768.72x = 2,651,641,958.17
5. Step 5: Solve for x
   x = 2,651,641,958.17/45,768.72
6. Step 6: Final answer
   x = 57,935.68