Finding the Fourth Proportional to 78,682.71, 108,583.38 and 42,872.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,682.71 : 108,583.38 = 42,872.72 : x
2. Step 2: Convert to fraction form
   78,682.71/108,583.38 = 42,872.72/x
3. Step 3: Cross multiply
   78,682.71x = 108,583.38 × 42,872.72
4. Step 4: Simplify right side
   78,682.71x = 4,655,264,304.48
5. Step 5: Solve for x
   x = 4,655,264,304.48/78,682.71
6. Step 6: Final answer
   x = 59,165.02