Finding the Fourth Proportional to 152,084.64, 209,878.16 and 84,106.20

Step by Step Solution

1. Step 1: Write the proportion equation
   152,084.64 : 209,878.16 = 84,106.20 : x
2. Step 2: Convert to fraction form
   152,084.64/209,878.16 = 84,106.20/x
3. Step 3: Cross multiply
   152,084.64x = 209,878.16 × 84,106.20
4. Step 4: Simplify right side
   152,084.64x = 17,652,054,500.59
5. Step 5: Solve for x
   x = 17,652,054,500.59/152,084.64
6. Step 6: Final answer
   x = 116,067.31