Finding the Fourth Proportional to 72,404.42, 99,913.97 and 42,194.66

Step by Step Solution

1. Step 1: Write the proportion equation
   72,404.42 : 99,913.97 = 42,194.66 : x
2. Step 2: Convert to fraction form
   72,404.42/99,913.97 = 42,194.66/x
3. Step 3: Cross multiply
   72,404.42x = 99,913.97 × 42,194.66
4. Step 4: Simplify right side
   72,404.42x = 4,215,835,599.32
5. Step 5: Solve for x
   x = 4,215,835,599.32/72,404.42
6. Step 6: Final answer
   x = 58,226.22