Finding the Fourth Proportional to 42,308.08, 63,461.62 and 10,287.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,308.08 : 63,461.62 = 10,287.34 : x
2. Step 2: Convert to fraction form
   42,308.08/63,461.62 = 10,287.34/x
3. Step 3: Cross multiply
   42,308.08x = 63,461.62 × 10,287.34
4. Step 4: Simplify right side
   42,308.08x = 652,851,116.10
5. Step 5: Solve for x
   x = 652,851,116.10/42,308.08
6. Step 6: Final answer
   x = 15,430.89