Finding the Fourth Proportional to 152,928.48, 211,019.76 and 84,940.32

Step by Step Solution

1. Step 1: Write the proportion equation
   152,928.48 : 211,019.76 = 84,940.32 : x
2. Step 2: Convert to fraction form
   152,928.48/211,019.76 = 84,940.32/x
3. Step 3: Cross multiply
   152,928.48x = 211,019.76 × 84,940.32
4. Step 4: Simplify right side
   152,928.48x = 17,924,085,940.72
5. Step 5: Solve for x
   x = 17,924,085,940.72/152,928.48
6. Step 6: Final answer
   x = 117,205.68