Finding the Fourth Proportional to 118,606.34, 163,744.42 and 78,436.62

Step by Step Solution

1. Step 1: Write the proportion equation
   118,606.34 : 163,744.42 = 78,436.62 : x
2. Step 2: Convert to fraction form
   118,606.34/163,744.42 = 78,436.62/x
3. Step 3: Cross multiply
   118,606.34x = 163,744.42 × 78,436.62
4. Step 4: Simplify right side
   118,606.34x = 12,843,558,848.66
5. Step 5: Solve for x
   x = 12,843,558,848.66/118,606.34
6. Step 6: Final answer
   x = 108,287.29