Finding the Fourth Proportional to 120,616.32, 166,461.72 and 69,630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,616.32 : 166,461.72 = 69,630.72 : x
2. Step 2: Convert to fraction form
   120,616.32/166,461.72 = 69,630.72/x
3. Step 3: Cross multiply
   120,616.32x = 166,461.72 × 69,630.72
4. Step 4: Simplify right side
   120,616.32x = 11,590,849,416.04
5. Step 5: Solve for x
   x = 11,590,849,416.04/120,616.32
6. Step 6: Final answer
   x = 96,096.86