Finding the Fourth Proportional to 156,234.56, 215,604.56 and 84,614.72

Step by Step Solution

1. Step 1: Write the proportion equation
   156,234.56 : 215,604.56 = 84,614.72 : x
2. Step 2: Convert to fraction form
   156,234.56/215,604.56 = 84,614.72/x
3. Step 3: Cross multiply
   156,234.56x = 215,604.56 × 84,614.72
4. Step 4: Simplify right side
   156,234.56x = 18,243,319,475.12
5. Step 5: Solve for x
   x = 18,243,319,475.12/156,234.56
6. Step 6: Final answer
   x = 116,768.78