Finding the Fourth Proportional to 268,219.16, 402,404.04 and 78,684

Step by Step Solution

1. Step 1: Write the proportion equation
   268,219.16 : 402,404.04 = 78,684 : x
2. Step 2: Convert to fraction form
   268,219.16/402,404.04 = 78,684/x
3. Step 3: Cross multiply
   268,219.16x = 402,404.04 × 78,684
4. Step 4: Simplify right side
   268,219.16x = 31,662,759,483.36
5. Step 5: Solve for x
   x = 31,662,759,483.36/268,219.16
6. Step 6: Final answer
   x = 118,048.09