Finding the Fourth Proportional to 109,466.72, 164,336.16 and 76,397.12

Step by Step Solution

1. Step 1: Write the proportion equation
   109,466.72 : 164,336.16 = 76,397.12 : x
2. Step 2: Convert to fraction form
   109,466.72/164,336.16 = 76,397.12/x
3. Step 3: Cross multiply
   109,466.72x = 164,336.16 × 76,397.12
4. Step 4: Simplify right side
   109,466.72x = 12,554,809,335.86
5. Step 5: Solve for x
   x = 12,554,809,335.86/109,466.72
6. Step 6: Final answer
   x = 114,690.65