Finding the Fourth Proportional to 152,016.21, 209,782.67 and 84,948.21

Step by Step Solution

1. Step 1: Write the proportion equation
   152,016.21 : 209,782.67 = 84,948.21 : x
2. Step 2: Convert to fraction form
   152,016.21/209,782.67 = 84,948.21/x
3. Step 3: Cross multiply
   152,016.21x = 209,782.67 × 84,948.21
4. Step 4: Simplify right side
   152,016.21x = 17,820,661,880.78
5. Step 5: Solve for x
   x = 17,820,661,880.78/152,016.21
6. Step 6: Final answer
   x = 117,228.69