Finding the Fourth Proportional to 152,078.42, 209,869.60 and 84,100

Step by Step Solution

1. Step 1: Write the proportion equation
   152,078.42 : 209,869.60 = 84,100 : x
2. Step 2: Convert to fraction form
   152,078.42/209,869.60 = 84,100/x
3. Step 3: Cross multiply
   152,078.42x = 209,869.60 × 84,100
4. Step 4: Simplify right side
   152,078.42x = 17,650,033,360
5. Step 5: Solve for x
   x = 17,650,033,360/152,078.42
6. Step 6: Final answer
   x = 116,058.76