Finding the Fourth Proportional to 78,531.90, 108,375.03 and 42,722.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,531.90 : 108,375.03 = 42,722.88 : x
2. Step 2: Convert to fraction form
   78,531.90/108,375.03 = 42,722.88/x
3. Step 3: Cross multiply
   78,531.90x = 108,375.03 × 42,722.88
4. Step 4: Simplify right side
   78,531.90x = 4,630,093,401.69
5. Step 5: Solve for x
   x = 4,630,093,401.69/78,531.90
6. Step 6: Final answer
   x = 58,958.12