Finding the Fourth Proportional to 42,118.53, 63,123.13 and 17,129.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,118.53 : 63,123.13 = 17,129.49 : x
2. Step 2: Convert to fraction form
   42,118.53/63,123.13 = 17,129.49/x
3. Step 3: Cross multiply
   42,118.53x = 63,123.13 × 17,129.49
4. Step 4: Simplify right side
   42,118.53x = 1,081,267,024.10
5. Step 5: Solve for x
   x = 1,081,267,024.10/42,118.53
6. Step 6: Final answer
   x = 25,672.00