Finding the Fourth Proportional to 293,718.72, 440,578.52 and 72,102.72

Step by Step Solution

1. Step 1: Write the proportion equation
   293,718.72 : 440,578.52 = 72,102.72 : x
2. Step 2: Convert to fraction form
   293,718.72/440,578.52 = 72,102.72/x
3. Step 3: Cross multiply
   293,718.72x = 440,578.52 × 72,102.72
4. Step 4: Simplify right side
   293,718.72x = 31,766,909,665.57
5. Step 5: Solve for x
   x = 31,766,909,665.57/293,718.72
6. Step 6: Final answer
   x = 108,154.19