Finding the Fourth Proportional to 72,363.20, 99,873.58 and 42,166.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,363.20 : 99,873.58 = 42,166.42 : x
2. Step 2: Convert to fraction form
   72,363.20/99,873.58 = 42,166.42/x
3. Step 3: Cross multiply
   72,363.20x = 99,873.58 × 42,166.42
4. Step 4: Simplify right side
   72,363.20x = 4,211,311,321.18
5. Step 5: Solve for x
   x = 4,211,311,321.18/72,363.20
6. Step 6: Final answer
   x = 58,196.86