Finding the Fourth Proportional to 101,100.32, 139,517.48 and 55,778.67

Step by Step Solution

1. Step 1: Write the proportion equation
   101,100.32 : 139,517.48 = 55,778.67 : x
2. Step 2: Convert to fraction form
   101,100.32/139,517.48 = 55,778.67/x
3. Step 3: Cross multiply
   101,100.32x = 139,517.48 × 55,778.67
4. Step 4: Simplify right side
   101,100.32x = 7,782,099,476.15
5. Step 5: Solve for x
   x = 7,782,099,476.15/101,100.32
6. Step 6: Final answer
   x = 76,974.03