Finding the Fourth Proportional to 42,626.10, 63,978.54 and 21,580.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42,626.10 : 63,978.54 = 21,580.92 : x
2. Step 2: Convert to fraction form
   42,626.10/63,978.54 = 21,580.92/x
3. Step 3: Cross multiply
   42,626.10x = 63,978.54 × 21,580.92
4. Step 4: Simplify right side
   42,626.10x = 1,380,715,753.46
5. Step 5: Solve for x
   x = 1,380,715,753.46/42,626.10
6. Step 6: Final answer
   x = 32,391.32