Finding the Fourth Proportional to 108,086.86, 162,376.32 and 78,193.30

Step by Step Solution

1. Step 1: Write the proportion equation
   108,086.86 : 162,376.32 = 78,193.30 : x
2. Step 2: Convert to fraction form
   108,086.86/162,376.32 = 78,193.30/x
3. Step 3: Cross multiply
   108,086.86x = 162,376.32 × 78,193.30
4. Step 4: Simplify right side
   108,086.86x = 12,696,740,302.66
5. Step 5: Solve for x
   x = 12,696,740,302.66/108,086.86
6. Step 6: Final answer
   x = 117,467.94