Finding the Fourth Proportional to 108,085.86, 162,374.82 and 78,192.30

Step by Step Solution

1. Step 1: Write the proportion equation
   108,085.86 : 162,374.82 = 78,192.30 : x
2. Step 2: Convert to fraction form
   108,085.86/162,374.82 = 78,192.30/x
3. Step 3: Cross multiply
   108,085.86x = 162,374.82 × 78,192.30
4. Step 4: Simplify right side
   108,085.86x = 12,696,460,246.92
5. Step 5: Solve for x
   x = 12,696,460,246.92/108,085.86
6. Step 6: Final answer
   x = 117,466.44