Finding the Fourth Proportional to 156,348.72, 215,760.69 and 84,730.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,348.72 : 215,760.69 = 84,730.50 : x
2. Step 2: Convert to fraction form
   156,348.72/215,760.69 = 84,730.50/x
3. Step 3: Cross multiply
   156,348.72x = 215,760.69 × 84,730.50
4. Step 4: Simplify right side
   156,348.72x = 18,281,511,144.05
5. Step 5: Solve for x
   x = 18,281,511,144.05/156,348.72
6. Step 6: Final answer
   x = 116,927.80