Finding the Fourth Proportional to 109,979.29, 151,774.79 and 64,648.96

Step by Step Solution

1. Step 1: Write the proportion equation
   109,979.29 : 151,774.79 = 64,648.96 : x
2. Step 2: Convert to fraction form
   109,979.29/151,774.79 = 64,648.96/x
3. Step 3: Cross multiply
   109,979.29x = 151,774.79 × 64,648.96
4. Step 4: Simplify right side
   109,979.29x = 9,812,082,327.72
5. Step 5: Solve for x
   x = 9,812,082,327.72/109,979.29
6. Step 6: Final answer
   x = 89,217.55