Finding the Fourth Proportional to 101,264.72, 139,744.64 and 55,945.62

Step by Step Solution

1. Step 1: Write the proportion equation
   101,264.72 : 139,744.64 = 55,945.62 : x
2. Step 2: Convert to fraction form
   101,264.72/139,744.64 = 55,945.62/x
3. Step 3: Cross multiply
   101,264.72x = 139,744.64 × 55,945.62
4. Step 4: Simplify right side
   101,264.72x = 7,818,100,666.34
5. Step 5: Solve for x
   x = 7,818,100,666.34/101,264.72
6. Step 6: Final answer
   x = 77,204.59