Finding the Fourth Proportional to 144,892.72, 217,390.50 and 64,924.40

Step by Step Solution

1. Step 1: Write the proportion equation
   144,892.72 : 217,390.50 = 64,924.40 : x
2. Step 2: Convert to fraction form
   144,892.72/217,390.50 = 64,924.40/x
3. Step 3: Cross multiply
   144,892.72x = 217,390.50 × 64,924.40
4. Step 4: Simplify right side
   144,892.72x = 14,113,947,778.20
5. Step 5: Solve for x
   x = 14,113,947,778.20/144,892.72
6. Step 6: Final answer
   x = 97,409.64