Finding the Fourth Proportional to 42,134.28, 63,205.05 and 10,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,134.28 : 63,205.05 = 10,969.50 : x
2. Step 2: Convert to fraction form
   42,134.28/63,205.05 = 10,969.50/x
3. Step 3: Cross multiply
   42,134.28x = 63,205.05 × 10,969.50
4. Step 4: Simplify right side
   42,134.28x = 693,327,795.98
5. Step 5: Solve for x
   x = 693,327,795.98/42,134.28
6. Step 6: Final answer
   x = 16,455.20