Finding the Fourth Proportional to 101,279.15, 139,766.69 and 55,958.17

Step by Step Solution

1. Step 1: Write the proportion equation
   101,279.15 : 139,766.69 = 55,958.17 : x
2. Step 2: Convert to fraction form
   101,279.15/139,766.69 = 55,958.17/x
3. Step 3: Cross multiply
   101,279.15x = 139,766.69 × 55,958.17
4. Step 4: Simplify right side
   101,279.15x = 7,821,088,199.36
5. Step 5: Solve for x
   x = 7,821,088,199.36/101,279.15
6. Step 6: Final answer
   x = 77,223.08