Finding the Fourth Proportional to 42,084.88, 63,137.89 and 12,099.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,084.88 : 63,137.89 = 12,099.17 : x
2. Step 2: Convert to fraction form
   42,084.88/63,137.89 = 12,099.17/x
3. Step 3: Cross multiply
   42,084.88x = 63,137.89 × 12,099.17
4. Step 4: Simplify right side
   42,084.88x = 763,916,064.55
5. Step 5: Solve for x
   x = 763,916,064.55/42,084.88
6. Step 6: Final answer
   x = 18,151.79