Finding the Fourth Proportional to 155,942.72, 215,200.48 and 84,322.52

Step by Step Solution

1. Step 1: Write the proportion equation
   155,942.72 : 215,200.48 = 84,322.52 : x
2. Step 2: Convert to fraction form
   155,942.72/215,200.48 = 84,322.52/x
3. Step 3: Cross multiply
   155,942.72x = 215,200.48 × 84,322.52
4. Step 4: Simplify right side
   155,942.72x = 18,146,246,778.81
5. Step 5: Solve for x
   x = 18,146,246,778.81/155,942.72
6. Step 6: Final answer
   x = 116,364.82