Finding the Fourth Proportional to 109,040.10, 163,479.15 and 56,487.30

Step by Step Solution

1. Step 1: Write the proportion equation
   109,040.10 : 163,479.15 = 56,487.30 : x
2. Step 2: Convert to fraction form
   109,040.10/163,479.15 = 56,487.30/x
3. Step 3: Cross multiply
   109,040.10x = 163,479.15 × 56,487.30
4. Step 4: Simplify right side
   109,040.10x = 9,234,495,789.80
5. Step 5: Solve for x
   x = 9,234,495,789.80/109,040.10
6. Step 6: Final answer
   x = 84,688.99