Finding the Fourth Proportional to 72,310.70, 99,785.85 and 42,096.89

Step by Step Solution

1. Step 1: Write the proportion equation
   72,310.70 : 99,785.85 = 42,096.89 : x
2. Step 2: Convert to fraction form
   72,310.70/99,785.85 = 42,096.89/x
3. Step 3: Cross multiply
   72,310.70x = 99,785.85 × 42,096.89
4. Step 4: Simplify right side
   72,310.70x = 4,200,673,951.01
5. Step 5: Solve for x
   x = 4,200,673,951.01/72,310.70
6. Step 6: Final answer
   x = 58,092.01