Finding the Fourth Proportional to 165,064.19, 247,680.72 and 78,607.89

Step by Step Solution

1. Step 1: Write the proportion equation
   165,064.19 : 247,680.72 = 78,607.89 : x
2. Step 2: Convert to fraction form
   165,064.19/247,680.72 = 78,607.89/x
3. Step 3: Cross multiply
   165,064.19x = 247,680.72 × 78,607.89
4. Step 4: Simplify right side
   165,064.19x = 19,469,658,792.88
5. Step 5: Solve for x
   x = 19,469,658,792.88/165,064.19
6. Step 6: Final answer
   x = 117,952.05