Finding the Fourth Proportional to 42,003, 57,965.76 and 23,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,003 : 57,965.76 = 23,139.72 : x
2. Step 2: Convert to fraction form
   42,003/57,965.76 = 23,139.72/x
3. Step 3: Cross multiply
   42,003x = 57,965.76 × 23,139.72
4. Step 4: Simplify right side
   42,003x = 1,341,311,455.99
5. Step 5: Solve for x
   x = 1,341,311,455.99/42,003
6. Step 6: Final answer
   x = 31,933.71