Finding the Fourth Proportional to 42,066.72, 63,089.10 and 12,476.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,066.72 : 63,089.10 = 12,476.61 : x
2. Step 2: Convert to fraction form
   42,066.72/63,089.10 = 12,476.61/x
3. Step 3: Cross multiply
   42,066.72x = 63,089.10 × 12,476.61
4. Step 4: Simplify right side
   42,066.72x = 787,138,095.95
5. Step 5: Solve for x
   x = 787,138,095.95/42,066.72
6. Step 6: Final answer
   x = 18,711.66