Finding the Fourth Proportional to 42,101.45, 63,151.63 and 12,116.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,101.45 : 63,151.63 = 12,116.48 : x
2. Step 2: Convert to fraction form
   42,101.45/63,151.63 = 12,116.48/x
3. Step 3: Cross multiply
   42,101.45x = 63,151.63 × 12,116.48
4. Step 4: Simplify right side
   42,101.45x = 765,175,461.86
5. Step 5: Solve for x
   x = 765,175,461.86/42,101.45
6. Step 6: Final answer
   x = 18,174.56