Finding the Fourth Proportional to 155,942.25, 215,200.15 and 84,322.10

Step by Step Solution

1. Step 1: Write the proportion equation
   155,942.25 : 215,200.15 = 84,322.10 : x
2. Step 2: Convert to fraction form
   155,942.25/215,200.15 = 84,322.10/x
3. Step 3: Cross multiply
   155,942.25x = 215,200.15 × 84,322.10
4. Step 4: Simplify right side
   155,942.25x = 18,146,128,568.32
5. Step 5: Solve for x
   x = 18,146,128,568.32/155,942.25
6. Step 6: Final answer
   x = 116,364.41