Finding the Fourth Proportional to 72,416.33, 99,934.31 and 42,219.53

Step by Step Solution

1. Step 1: Write the proportion equation
   72,416.33 : 99,934.31 = 42,219.53 : x
2. Step 2: Convert to fraction form
   72,416.33/99,934.31 = 42,219.53/x
3. Step 3: Cross multiply
   72,416.33x = 99,934.31 × 42,219.53
4. Step 4: Simplify right side
   72,416.33x = 4,219,179,387.98
5. Step 5: Solve for x
   x = 4,219,179,387.98/72,416.33
6. Step 6: Final answer
   x = 58,262.82