Finding the Fourth Proportional to 42,522.69, 63,774.30 and 12,529.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,522.69 : 63,774.30 = 12,529.17 : x
2. Step 2: Convert to fraction form
   42,522.69/63,774.30 = 12,529.17/x
3. Step 3: Cross multiply
   42,522.69x = 63,774.30 × 12,529.17
4. Step 4: Simplify right side
   42,522.69x = 799,038,983.69
5. Step 5: Solve for x
   x = 799,038,983.69/42,522.69
6. Step 6: Final answer
   x = 18,790.89