Finding the Fourth Proportional to 102,104.78, 140,902.16 and 55,536.48

Step by Step Solution

1. Step 1: Write the proportion equation
   102,104.78 : 140,902.16 = 55,536.48 : x
2. Step 2: Convert to fraction form
   102,104.78/140,902.16 = 55,536.48/x
3. Step 3: Cross multiply
   102,104.78x = 140,902.16 × 55,536.48
4. Step 4: Simplify right side
   102,104.78x = 7,825,209,707.32
5. Step 5: Solve for x
   x = 7,825,209,707.32/102,104.78
6. Step 6: Final answer
   x = 76,639.01