Finding the Fourth Proportional to 117,103.46, 161,602.81 and 63,388.31

Step by Step Solution

1. Step 1: Write the proportion equation
   117,103.46 : 161,602.81 = 63,388.31 : x
2. Step 2: Convert to fraction form
   117,103.46/161,602.81 = 63,388.31/x
3. Step 3: Cross multiply
   117,103.46x = 161,602.81 × 63,388.31
4. Step 4: Simplify right side
   117,103.46x = 10,243,729,017.15
5. Step 5: Solve for x
   x = 10,243,729,017.15/117,103.46
6. Step 6: Final answer
   x = 87,475.89