Finding the Fourth Proportional to 101,226.72, 139,709.98 and 58,809.86

Step by Step Solution

1. Step 1: Write the proportion equation
   101,226.72 : 139,709.98 = 58,809.86 : x
2. Step 2: Convert to fraction form
   101,226.72/139,709.98 = 58,809.86/x
3. Step 3: Cross multiply
   101,226.72x = 139,709.98 × 58,809.86
4. Step 4: Simplify right side
   101,226.72x = 8,216,324,364.40
5. Step 5: Solve for x
   x = 8,216,324,364.40/101,226.72
6. Step 6: Final answer
   x = 81,167.55