Finding the Fourth Proportional to 50,902.86, 70,300.86 and 39,705.42

Step by Step Solution

1. Step 1: Write the proportion equation
   50,902.86 : 70,300.86 = 39,705.42 : x
2. Step 2: Convert to fraction form
   50,902.86/70,300.86 = 39,705.42/x
3. Step 3: Cross multiply
   50,902.86x = 70,300.86 × 39,705.42
4. Step 4: Simplify right side
   50,902.86x = 2,791,325,172.66
5. Step 5: Solve for x
   x = 2,791,325,172.66/50,902.86
6. Step 6: Final answer
   x = 54,836.31