Finding the Fourth Proportional to 72,398.76, 99,913.08 and 42,203.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,398.76 : 99,913.08 = 42,203.56 : x
2. Step 2: Convert to fraction form
   72,398.76/99,913.08 = 42,203.56/x
3. Step 3: Cross multiply
   72,398.76x = 99,913.08 × 42,203.56
4. Step 4: Simplify right side
   72,398.76x = 4,216,687,666.56
5. Step 5: Solve for x
   x = 4,216,687,666.56/72,398.76
6. Step 6: Final answer
   x = 58,242.54