Finding the Fourth Proportional to 101,002.12, 139,376.66 and 55,677.76

Step by Step Solution

1. Step 1: Write the proportion equation
   101,002.12 : 139,376.66 = 55,677.76 : x
2. Step 2: Convert to fraction form
   101,002.12/139,376.66 = 55,677.76/x
3. Step 3: Cross multiply
   101,002.12x = 139,376.66 × 55,677.76
4. Step 4: Simplify right side
   101,002.12x = 7,760,180,015.83
5. Step 5: Solve for x
   x = 7,760,180,015.83/101,002.12
6. Step 6: Final answer
   x = 76,831.85