Finding the Fourth Proportional to 109,002.30, 163,565.56 and 42,433.80

Step by Step Solution

1. Step 1: Write the proportion equation
   109,002.30 : 163,565.56 = 42,433.80 : x
2. Step 2: Convert to fraction form
   109,002.30/163,565.56 = 42,433.80/x
3. Step 3: Cross multiply
   109,002.30x = 163,565.56 × 42,433.80
4. Step 4: Simplify right side
   109,002.30x = 6,940,708,259.93
5. Step 5: Solve for x
   x = 6,940,708,259.93/109,002.30
6. Step 6: Final answer
   x = 63,674.88