Finding the Fourth Proportional to 42,066.61, 63,099.74 and 17,100.79

Step by Step Solution

1. Step 1: Write the proportion equation
   42,066.61 : 63,099.74 = 17,100.79 : x
2. Step 2: Convert to fraction form
   42,066.61/63,099.74 = 17,100.79/x
3. Step 3: Cross multiply
   42,066.61x = 63,099.74 × 17,100.79
4. Step 4: Simplify right side
   42,066.61x = 1,079,055,402.79
5. Step 5: Solve for x
   x = 1,079,055,402.79/42,066.61
6. Step 6: Final answer
   x = 25,651.11