Finding the Fourth Proportional to 101,091.55, 139,505.94 and 55,772.35

Step by Step Solution

1. Step 1: Write the proportion equation
   101,091.55 : 139,505.94 = 55,772.35 : x
2. Step 2: Convert to fraction form
   101,091.55/139,505.94 = 55,772.35/x
3. Step 3: Cross multiply
   101,091.55x = 139,505.94 × 55,772.35
4. Step 4: Simplify right side
   101,091.55x = 7,780,574,112.76
5. Step 5: Solve for x
   x = 7,780,574,112.76/101,091.55
6. Step 6: Final answer
   x = 76,965.62