Finding the Fourth Proportional to 42,120.54, 63,126.12 and 17,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,120.54 : 63,126.12 = 17,131.50 : x
2. Step 2: Convert to fraction form
   42,120.54/63,126.12 = 17,131.50/x
3. Step 3: Cross multiply
   42,120.54x = 63,126.12 × 17,131.50
4. Step 4: Simplify right side
   42,120.54x = 1,081,445,124.78
5. Step 5: Solve for x
   x = 1,081,445,124.78/42,120.54
6. Step 6: Final answer
   x = 25,675.01