Finding the Fourth Proportional to 102,902.88, 154,612.62 and 65,479.20

Step by Step Solution

1. Step 1: Write the proportion equation
   102,902.88 : 154,612.62 = 65,479.20 : x
2. Step 2: Convert to fraction form
   102,902.88/154,612.62 = 65,479.20/x
3. Step 3: Cross multiply
   102,902.88x = 154,612.62 × 65,479.20
4. Step 4: Simplify right side
   102,902.88x = 10,123,910,667.50
5. Step 5: Solve for x
   x = 10,123,910,667.50/102,902.88
6. Step 6: Final answer
   x = 98,383.16