Finding the Fourth Proportional to 686,016.42, 947,031.75 and 482,242.02

Step by Step Solution

1. Step 1: Write the proportion equation
   686,016.42 : 947,031.75 = 482,242.02 : x
2. Step 2: Convert to fraction form
   686,016.42/947,031.75 = 482,242.02/x
3. Step 3: Cross multiply
   686,016.42x = 947,031.75 × 482,242.02
4. Step 4: Simplify right side
   686,016.42x = 456,698,505,899.82
5. Step 5: Solve for x
   x = 456,698,505,899.82/686,016.42
6. Step 6: Final answer
   x = 665,725.33