Finding the Fourth Proportional to 101,096.42, 139,540.77 and 58,668.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,096.42 : 139,540.77 = 58,668.50 : x
2. Step 2: Convert to fraction form
   101,096.42/139,540.77 = 58,668.50/x
3. Step 3: Cross multiply
   101,096.42x = 139,540.77 × 58,668.50
4. Step 4: Simplify right side
   101,096.42x = 8,186,647,664.75
5. Step 5: Solve for x
   x = 8,186,647,664.75/101,096.42
6. Step 6: Final answer
   x = 80,978.61