Finding the Fourth Proportional to 101,019.72, 139,405.02 and 58,582.20

Step by Step Solution

1. Step 1: Write the proportion equation
   101,019.72 : 139,405.02 = 58,582.20 : x
2. Step 2: Convert to fraction form
   101,019.72/139,405.02 = 58,582.20/x
3. Step 3: Cross multiply
   101,019.72x = 139,405.02 × 58,582.20
4. Step 4: Simplify right side
   101,019.72x = 8,166,652,762.64
5. Step 5: Solve for x
   x = 8,166,652,762.64/101,019.72
6. Step 6: Final answer
   x = 80,842.16