Finding the Fourth Proportional to 72,320.38, 99,815.94 and 42,110.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,320.38 : 99,815.94 = 42,110.34 : x
2. Step 2: Convert to fraction form
   72,320.38/99,815.94 = 42,110.34/x
3. Step 3: Cross multiply
   72,320.38x = 99,815.94 × 42,110.34
4. Step 4: Simplify right side
   72,320.38x = 4,203,283,170.82
5. Step 5: Solve for x
   x = 4,203,283,170.82/72,320.38
6. Step 6: Final answer
   x = 58,120.31