Finding the Fourth Proportional to 101,091.72, 139,498.76 and 55,771.41

Step by Step Solution

1. Step 1: Write the proportion equation
   101,091.72 : 139,498.76 = 55,771.41 : x
2. Step 2: Convert to fraction form
   101,091.72/139,498.76 = 55,771.41/x
3. Step 3: Cross multiply
   101,091.72x = 139,498.76 × 55,771.41
4. Step 4: Simplify right side
   101,091.72x = 7,780,042,259.59
5. Step 5: Solve for x
   x = 7,780,042,259.59/101,091.72
6. Step 6: Final answer
   x = 76,960.23