Finding the Fourth Proportional to 85,839.95, 118,447.31 and 50,002.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,839.95 : 118,447.31 = 50,002.31 : x
2. Step 2: Convert to fraction form
   85,839.95/118,447.31 = 50,002.31/x
3. Step 3: Cross multiply
   85,839.95x = 118,447.31 × 50,002.31
4. Step 4: Simplify right side
   85,839.95x = 5,922,639,534.41
5. Step 5: Solve for x
   x = 5,922,639,534.41/85,839.95
6. Step 6: Final answer
   x = 68,996.30