Finding the Fourth Proportional to 42,109.17, 63,108.90 and 17,120.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,109.17 : 63,108.90 = 17,120.06 : x
2. Step 2: Convert to fraction form
   42,109.17/63,108.90 = 17,120.06/x
3. Step 3: Cross multiply
   42,109.17x = 63,108.90 × 17,120.06
4. Step 4: Simplify right side
   42,109.17x = 1,080,427,838.99
5. Step 5: Solve for x
   x = 1,080,427,838.99/42,109.17
6. Step 6: Final answer
   x = 25,657.78