Finding the Fourth Proportional to 109,145.58, 163,781.25 and 45,960.78

Step by Step Solution

1. Step 1: Write the proportion equation
   109,145.58 : 163,781.25 = 45,960.78 : x
2. Step 2: Convert to fraction form
   109,145.58/163,781.25 = 45,960.78/x
3. Step 3: Cross multiply
   109,145.58x = 163,781.25 × 45,960.78
4. Step 4: Simplify right side
   109,145.58x = 7,527,513,999.38
5. Step 5: Solve for x
   x = 7,527,513,999.38/109,145.58
6. Step 6: Final answer
   x = 68,967.65