Finding the Fourth Proportional to 117,693.42, 162,410.10 and 63,978

Step by Step Solution

1. Step 1: Write the proportion equation
   117,693.42 : 162,410.10 = 63,978 : x
2. Step 2: Convert to fraction form
   117,693.42/162,410.10 = 63,978/x
3. Step 3: Cross multiply
   117,693.42x = 162,410.10 × 63,978
4. Step 4: Simplify right side
   117,693.42x = 10,390,673,377.80
5. Step 5: Solve for x
   x = 10,390,673,377.80/117,693.42
6. Step 6: Final answer
   x = 88,285.93