Finding the Fourth Proportional to 42,071.10, 63,108.27 and 10,905.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,071.10 : 63,108.27 = 10,905.54 : x
2. Step 2: Convert to fraction form
   42,071.10/63,108.27 = 10,905.54/x
3. Step 3: Cross multiply
   42,071.10x = 63,108.27 × 10,905.54
4. Step 4: Simplify right side
   42,071.10x = 688,229,762.82
5. Step 5: Solve for x
   x = 688,229,762.82/42,071.10
6. Step 6: Final answer
   x = 16,358.73