Finding the Fourth Proportional to 100,987.49, 139,362.01 and 55,665.52

Step by Step Solution

1. Step 1: Write the proportion equation
   100,987.49 : 139,362.01 = 55,665.52 : x
2. Step 2: Convert to fraction form
   100,987.49/139,362.01 = 55,665.52/x
3. Step 3: Cross multiply
   100,987.49x = 139,362.01 × 55,665.52
4. Step 4: Simplify right side
   100,987.49x = 7,757,658,267.33
5. Step 5: Solve for x
   x = 7,757,658,267.33/100,987.49
6. Step 6: Final answer
   x = 76,818.01