Finding the Fourth Proportional to 156,158.38, 215,498.32 and 84,538.38

Step by Step Solution

1. Step 1: Write the proportion equation
   156,158.38 : 215,498.32 = 84,538.38 : x
2. Step 2: Convert to fraction form
   156,158.38/215,498.32 = 84,538.38/x
3. Step 3: Cross multiply
   156,158.38x = 215,498.32 × 84,538.38
4. Step 4: Simplify right side
   156,158.38x = 18,217,879,937.82
5. Step 5: Solve for x
   x = 18,217,879,937.82/156,158.38
6. Step 6: Final answer
   x = 116,662.84