Finding the Fourth Proportional to 42,379.10, 63,558 and 17,426.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,379.10 : 63,558 = 17,426.12 : x
2. Step 2: Convert to fraction form
   42,379.10/63,558 = 17,426.12/x
3. Step 3: Cross multiply
   42,379.10x = 63,558 × 17,426.12
4. Step 4: Simplify right side
   42,379.10x = 1,107,569,334.96
5. Step 5: Solve for x
   x = 1,107,569,334.96/42,379.10
6. Step 6: Final answer
   x = 26,134.80